000 00284nam a2200109Ia 4500
008 230515s9999||||xx |||||||||||||| ||und||
100 _aEhrlich Paul R.
_937508
245 0 _aPopulation Resources Environment
260 _bW.H. Freeman & Comp.
_c1972
300 _a509
942 _cBK
_pCL
999 _c159662
_d159662