00730nam a2200169Ia 4500008004100000010001400041020001800055040001700073082002700090100002000117245005700137260002700194300001900221520026000240650003800500700002200538190327s9999||||xx |||||||||||||| ||und||  a99-043250  a0-7668-0653-7  aNITILcNITIL  221sta630.27721bP888E  aPowers, Laura E 0aEcological principles of agriculturecLaura E Powers  a[Africa]bDelmarc2000  axi, 433p: ill.  aEcological principles of agriculture will help in understanding the ecological principles operating in any agricultural system. Everyone will findit invaluable as a general overview of ecological principles especially as they relate to agricultural practi  aAgricultural ecology; Agriculture  aMc Sorley, Robert