Alberto Ml. Brenes (1870-1948), a Ramonian scientist, Benemerito de la Patria, who is credited with the most important collections of plants and fungi for Costa Rica in the mid-twentieth century, including hundreds of new species...

This work includes the basics of chemical kinetics and its application to stability studies of medicines to scientifically establish the useful life of these and storage conditions to ensure their quality, safety and efficacy...

Although there are many translations into Spanish of works of logic and even original texts of great merits, there is no book in our country that fits the purposes and contents of a course of symbolic logic aimed at a varied audience that seeks to find precision in The matter, as well as breadth and clarity in the explanation. This lack is supplied by this excellent work...

Topics in this series meet the demand of students of the School of Chemistry, as well as an effort by the staff of this escula by providing texts to help them in their professional preparation...

Los temas seleccionados fueron determinados en gran medida por la demanda de los usuarios, pero también primaron criterios ecologistas, pues ha sido y será nuestra máxima preocupación el preservar el medio ambiente y los recursos naturales para disfrute de las actuales y futuras generaciones de costarricenses...

This text constitutes a very valuable tool for the socio-economic development of the Nicoya peninsula; Since its importance transcends the scientific knowledge of geology, providing technical bases on tectonics and geodynamics, among other aspects of great relevance...

Central America relates the observations of the Danish naturalist ANDERS SANDOE OERSTED (1816-1872) during his exploration of the Costa Rican territory between 1846 and 1848. It includes a series of impeccable engravings that constitute a historical legacy of invaluable importance. ..

The present text provides information on 17 species of rodent pests in Central America, their natural history, the damages they cause and the management techniques to reduce the negative impact on the interests of the human being...

This text deals with applied statistics chemistry. the development of the necessary statistical basis for the planning and analysis of results is emphasized. It contains chapters on basic statistical concepts, topics of descriptive statistics as measures of position and variability and frequency distribution...

It is a scientific work that brings together among its authors the experience of more than one hundred years in the teaching of chemistry as a science at several levels. The work is not only addressed to the student, but to every teacher eager to learn, eager to keep up to date with basic concepts...

A fascicle written in a simple language, aimed at students, sanitarians, merchants and the public in general, which aims to stimulate knowledge about these insects. It includes a photographic atlas and abundant references that emphasize the biological, medical and control aspects...

illustrated guide that includes reef fishes of the Pacific coast of Central and Cocos Island and demersal and pelagic species on the island. This work presents didactic figures and important features that facilitate the identification of these fish...

The topics selected with the Ecological Problems Series were determined largely by demand from users, but also prevailed environmental criteria, as it has been and will be our utmost concern to preserve the environment and natural resources for the enjoyment of current and future generations of Costa Ricans...

Percy Denyer, Jorge Cortes and Carlos Jiménez are three photographers that capture their visions of the natural and cultural heritage of Costa Rica. His images help shape the identities of Costa Ricans with essays written by biologists, geologists, archaeologists and historians of that heritage...

Descriptive inorganic chemistry focuses attention on the properties of the elements and their compounds. Given the breadth of this subject, it has focused interest on the most significant binary compounds of the transition elements of the d series, in order to give an overview. the properties of metals, oxides, hydrides, halides and hard materials are described...

Guía introductoria que tiene como finalidad servir de pauta para todas las personas interesadas en conocer un poco acerca de la aplicación de estadísticas descriptivas en un ambiente de Windows...

The Work Differential Equations for Life Sciences exposes classical methods for solving first-order EDs, higher-order linear EDs and Linear Differential Equation Systems. It includes a chapter on the Laplace Transform as a tool for solving linear EDs with constant coefficients And ED systems with constant coefficients illustrates the application of EDs to life science problems...

The book deals with probabilistic models, that is, of the theory of probability in discrete spaces. It develops the basic notions of events, discrete allopathic variables in one or more dimensions, probability distribution, marginal and conditional distributions, expected values, generatrix function of moments and approximations to well-known distributions such as Binomial and Poisson...

Más de 2.800 términos sobre ecología general, conservación e interacciones del hombre y sus actividades con el ambiente, conocimiento imprescindible para el ciudadano moderno. Posee referencias cruzadas para facilitar y ampliar los conocimientos del lector...

This book aims to address the lack of adequate text and paid special attention to make it more understandable. Different techniques are discussed, giving greater emphasis on changes that have made them useful...