000			00357nam a2200145Ia 4500
008			180612s9999||||xx |||||||||||||| ||und||
020			_a0-7923-3729-8
041			_aen
082			_a631.8
100			_aBARRUECO,C.Rodiguez.
245		0	_aFertilizer and Enviournment
260			_aBoston. _bKluwer Academic Pub. _c1994
300			_axiv,586p.
942			_cPR
999			_c50211 _d50211