000			00479nam a2200145Ia 4500
008			140712s9999 xx 000 0 und d
041			_aENG
080			_a631.1.001.5 _bMET
100			_aYang, Y. W.
245			_aMethods of farm management investigations _bfor improving farm productivity
260			_c1971 _aRome _bFood and Agriculture Organization of the United Nations
300			_axiii, 258
650			_aFarming SystemsFarm ManagementFarm Establishment
942			_2UDC _cBK
999			_c6289 _d6289