000			00360nam a2200133Ia 4500
008			221001s1977 xx 000 0 eng d
020			_a0716700298
082			_a301.32 ECO
100			_aEhrlich, Paul R.
245		0	_aEcoscience: Population, resources, environment
260			_aSan Francisco _bW. H. Freeman _c1977
300			_axv, 1051p.
942			_2ddc _cBK
999			_c48777 _d48777