000			00515nam a2200169Ia 4500
008			150327s9999 xx 000 0 und d
020			_a0931477107
041			_aENG
080			_a631.58 _bHIL-O
100			_aHildebrand ,Peter E.
245			_aOn-farm agronomic trials in farming systems research and extension
260			_c1985 _aBoulder _bLynne Rienner Publication
300			_axvi, 162p.
650			_aAGROECOSYSTEMSFARMING SYSTEMSAGRICULTURAL STRUCTURE
700			_aPoey, Federico
942			_cBK _2udc
999			_c15692 _d15692