History of Soybean Cultivation (270 BCE to 2020)


Book Description

The world's most comprehensive, well documented and well illustrated book on this subject. With extensive subject and geographical index. 318 photographs and illustrations - many in color. Free of charge in digital PDF format on Google Books.










History of Soybeans and Soyfoods in Iowa (1854-2021)


Book Description

The world's most comprehensive, well documented, and well illustrated book on this subject. With extensive subject and geographic index. 325 photographs and illustrations - many color. Free of charge in digital PDF format.




Egg Grading Manual


Book Description