000			00625cam a22001811 4500
020			_a0300013124 (v. 1) _a0300013132 (v. 2)
050	0		_aTD176.7
245	0	4	_aThe Environmental crisis.
260			_aNew Haven, _bYale University Press, _c1970; [c1970-71]
300			_a2 v.
500			_a"Lectures which comprised a 1968-69 symposium on 'Issues in environmental crises' at the Yale University School of Forestry."
505	0		_a[1] Man's struggle to live with himself.--2. Agenda for survival.
650		0	_aPollution.
650		0	_aNature
650		0	_aNatural resources.
700	1		_aHelfrich, Harold W.,
942			_cBK
999			_c786 _d786