Books

1. Natural resource conservation: An ecological approach
   

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2. Agricultural Research (Beltsville symposia in agricultural research)
   

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3. Sediment Hosted Mineral Deposits: Proceedings of a Symposium Held in Beijing, People's Republic of China, 30 July-4 August 1988 (Special Publication of ... Association of Sedimentologists)
   

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4. Climate and agriculture;: An ecological survey
   

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5. Remembering the farm: Memories of farming, ranching, and rural life in Canada, past and present
   

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Books