000 00482cam a2200169 i 4500
020 _a333146336
050 0 0 _aMED QK901
_b.B5
100 1 _aBillings, W. D.
245 1 0 _aPlants and the ecosystem /
250 _a2nd ed.
260 _aBelmont, Calif. :
_bWadsworth Pub. Co.,
_c1972.
300 _aviii, 177 p. :
_bill. ;
500 _aSecond ed. published in 1970 under title: Plants, man, and the ecosystem.
500 _aIncludes index.
650 0 _aPlant ecology.
942 _cBK
999 _c3869
_d3869