00565nam a2200157Ia 4500008004100000010001300041020001800054040001700072082002700089100002300116245011200139260003400251300001500285440006900300650003800369190328s9999||||xx |||||||||||||| ||und||  a79-13169  a0-89158-669-5  aNITILcNITIL  221sta338.10913bH343S  aHarwood, Richard R 0aSmall farm developmentbunderstanding and improving farming systems in the humid tropicscRichard R Harwood  aBoulderbWestview Pressc1979  axiv, 160p.  aIADS development-oriented literature series/ed by Steven A Breth  aFarms, Small; Agriculture-Tropics