Problemas de física del estado sólido

Soil is a pivotal component of the environment and the maintenance of soil quality is critical for ensuring the sustainability of the environment and the biosphere. The use of fertilizers has increased at a faster rate than global food production. Modern agriculture is dependent on phosphorus derived from phosphate rock, which is a non-renewable resource. It is needed to improve P acquisition efficiency for both low input and intensive agroecosystems. However, few studies have focused on cereal-legume interactions with regard to soil P. The objective of this work was to study the effects of...

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

Excerpt from Memorias de la Sociedad Cubana de Historia Natural "Felipe Poey," 1921-1922, Vol. 4 Conforme al orden del día el Presidente pronuncia una bre ve Alocución refiriéndose a los actos que habían tenido lugar fuera y dentro de la Sociedad como tributo a la memoria del sabio ictiólogo habanero Felipe Poey; y se expresó así. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally...

Provides an engaging and easy to use book with an innovative and interactive media program. It achieves a unique balance in emphasizing concepts without sacrificing scientific accuracy. The new MediaTutor, found at the end of each chapter, integrates the book and media by providing a brief description of the CD or WEB activity and the time requirement for completion. Earth Watch/Health Watch essays cover biodiversity, ozone depletion/prenatal diagnosis, and sexually transmitted diseases. Major topics include The Life Of A Cell, Patterns Of Inheritance, Evolution, Plant Anatomy And Physiology; ...