000			00326nam a2200145Ia 4500
008			160316s1961 xxu||||| |||| 00| 0 eng d
020			_a
100			_aEarl O.Heady
245			_aAgricultural Production Functions
250			_a1st
260			_aLUDHIANA _bKALYANI PUB. _c1961
300			_a667
700			_a _a
942	0	0	_03
999			_c38493 _d38493