00425pab a2200133 454500008004000000100002400040245012700064260000900191300001300200362000900213650002100222650002500243773002300268180718b1995   xxu||||| |||| 00| 0 eng d  aBellon, Mauricio R.  aFarmers knowledge and sustainable agroecosystem managementban operational definition and an example from Chiapas, Mexico.  c1995  ap.263-72  aFall  aFarmers - Mexico  aAgriculture - Mexico  aHuman Organization