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      Agricultural ecology and environment : proceedings of an International Symposium on Agricultural Ecology and Environment, Padova, Italy, 5-7 April 1988 için kapak resmi
      1. 
      Agricultural ecology and environment : proceedings of an International Symposium on Agricultural Ecology and Environment, Padova, Italy, 5-7 April 1988
      by 
      International Symposium on Agricultural Ecology and Environment (1988 : Padua, Italy)
      ScienceDirect http://www.sciencedirect.com/science/book/9780444886101
      ScienceDirect https://www.sciencedirect.com/science/book/9780444886101
      Format: 
      Alıntı: 
      also the increasing costs of chemical inputs and the low prices received for agricultural products have
      Crop ecology productivity and management in agricultural systems için kapak resmi
      2. 
      Crop ecology productivity and management in agricultural systems
      by 
      Connor, D. J.
      Click to View
      Format: 
      Alıntı: 
      . Development; Part II. Physical and Chemical Environments: 6. Aerial environment; 7. Soil resources; Part III