Difference between revisions of "Recommended references"

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(Permanent agriculture)
(Permanent agriculture)
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*[https://archive.org/details/soilfertilityper00hopkiala|''Soil Fertility and Permanent Agriculture''] Cyril G. Hopkins, 1910
 
*[https://archive.org/details/soilfertilityper00hopkiala|''Soil Fertility and Permanent Agriculture''] Cyril G. Hopkins, 1910
 
*[http://www.gutenberg.org/ebooks/5350|''Farmers of Forty Centuries: Or Permanent Agriculture in China, Korea and Japan'']  
 
*[http://www.gutenberg.org/ebooks/5350|''Farmers of Forty Centuries: Or Permanent Agriculture in China, Korea and Japan'']  
*J. Russell Smith's excellent 1929 book [http://soilandhealth.org/01aglibrary/010175.tree%20crops.pdf|''Tree Crops: A Permanent Agriculture'']
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* [http://soilandhealth.org/01aglibrary/010175.tree%20crops.pdf|''Tree Crops: A Permanent Agriculture''] J. Russell Smith, 1929
  
 
==Videos==
 
==Videos==

Revision as of 11:12, 14 January 2015

Books

Permanent agriculture

Videos