000 00296 a2200121 4500
080 _a581.5
_bM 137 P
245 1 _aPlant ecology
_cby W.B. McDougall
260 _aPhiladelphia
_c1949
650 _aPlant Ecology
100 1 _aMcDougall, W.B.
_d
300 _a234 p. & 1 frontispiece
901 _a47867
999 _c34646
_d34646