A. A. Hanson 
Practical Handbook of Agricultural Science [PDF ebook] 

First published in 1990, this new handy guide book is a ‘quick reference’ to a variety of topics pertaining to soils, and to the production and use of plants and animals. Emphasis has been devoted to basic considerations in plant adaptation, soils, seeds, major field crops, and selected aspects of animal science. A reasonable amount of background information on most topics selected for inclusion is furnished, providing the reader with critical information on the subject matter presented, in the absence of access to other source materials. Attention has been given to the inclusion of both common and scientific plant names, various conversion tables, tabular material used in the interpretation of certain statistical tests, and a glossary, albeit abridged, of terms encountered in the improvement and management of soils, plants, and animals.