000 00311nam a2200133Ia 4500
008 160316s1979 xxu||||| |||| 00| 0 eng d
020 _a
100 _aP.C. Burnham
245 _aSocial And Ecological Systems
250 _a1st
260 _aLONDON
_bACADEMIC PRESS
_c1979
300 _a314
700 _aR.F. Ellen
_a
999 _c923
_d923