000			00726nam a2200193u 4500
001			00717037
003			PWmBRO
008			040288
090			_b631.811/09154/I61n
111	2	0	_aInternational Potash Institute. _bColloquium _n(17th : _d1983 : _cRabat and Marrakech, Morocco).
245	1	0	_aNutrient balances and the need for fertilizers in semi-arid and arid regions : _bproceedings of the 17th Colloquium of the International Potash Institute held in Rabat and Marrakech, Morocco.
260			_aBern : _bThe Institute, _c1983.
300			_a394 p.
650	0	0	_aFertilizers.
650	0	0	_aArid regions agriculture.
650	0	0	_aSoils and nutrition.
942			_2ddc
994	0	1	_aT1001 049 355
999			_c40340 _d40340