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100 _abritish ecological society
245 0 _a.the biology of weeds;a symposium of the british ecological society,oxford,2d--4th,april 1959 harper,john l.(ed.)
260 _a1st.ed. | .Blackwell Scienctific Pub.
260 _c1960
942 _cBOK
999 _c5803
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