00466nam a22001817a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001600102100002500118245006900143260003300212300001100245650002800256CHAP20220329140826.0971013s1981 enk r 00010 eng d a58192 a59164 a63321 cCHAP04a631.584bS800aStonehouse, Bernard.1 aBiological husbandryb: a scientific approach to organic farming aLandon :bButterworth,c1981 a352 p.14aAgricultura orgánica.