000			00343nam a2200145Ia 4500
008			180611s9999||||xx |||||||||||||| ||und||
020			_a697075346
041			_aen
082			_a304.2
100			_aJoel Smith,
245		0	_aEcology and Demography
260			_aU.S.A _bWm.C.Brown Company Publishers _c1977
300			_avii, 88 p.
942			_cLL
999			_c599 _d599