000			00354nam a2200145Ia 4500
008			180613s9999||||xx |||||||||||||| ||und||
020			_a086531389X
041			_aen
082			_a630.75
100			_aSHANER, WW.
245		0	_aFarming systems research and development
260			_aBoulder _bWeatview press _c1981
300			_axviii, 414
942			_cSR
999			_c74191 _d74191