Por qué y cómo se hace la ciencia

Biographies and bibliographies of members are included in many of the volumes. Lists of members are usually given on covers of the numbers.

Este libro trata sobre los rosales que pueden encontrarse espontáneamente o asilvestrados en Aragón, que son la totalidad de los que crecen en la Península Ibérica (España y Portugal peninsulares, Andorra) e Islas Baleares, por lo que en la práctica se

Cuando el joven Marcos pasa la noche en el Museo de Ciencias Naturales comienzan a ocurrir fenomenos muy extranos... Pero todos se enmarcan dentro de la teoria de la evolucion: cambia, todo cambia, y las salas del museo, junto con los fantasticos personajes que cobran vida en este libro, nos van guiando por esta aventura nocturna.

This book is a Spanish translation of Faecal Sludge Management: Systems Approach for Implementation and Operation It is estimated that literally billions of residents in urban and peri-urban areas of Africa, Asia, and Latin America are served by onsite sanitation systems (e.g. various types of latrines and septic tanks). Until recently, the management of faecal sludge from these onsite systems has been grossly neglected, partially as a result of them being considered temporary solutions until sewer-based systems could be implemented. However, the perception of onsite or decentralized...