000			00373nam a2200145Ia 4500
005			20250323183052.0
008			241003s9999||||xx |||||||||||||| ||und||
040			_aPOF _bEN _cPOF
082			_a338.1096773 _bMAS
100			_aGarth massey
245		0	_aSubsistence and change
260			_bWestview press boulder _c1987
650			_aProduction Economics
942			_2DDC _cBK
999			_c13760 _d13760