Books

1. La Nouvelle agriculture (Bibliothèque Laffont des grands thèmes ; 50)
   

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2. Chemistry and World Food Supplies: The New Frontiers, Chemrawn II : Invited Papers Presented at the International Conference on Chemistry and World F
   

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3. The role of nitrogen in grassland productivity: A review of information from temperate regions, (Commonwealth Bureau of Pastures and Field Crops, Hurley, Eng)
   

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4. Farming in Britain today
   

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5. Soil science at the University of Wisconsin-Madison: A history of the department, 1889-1989
   

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Books