00748nam a22002051  4500001001300000003000400013005001700017008004100034010002200075040004800097050001500145100004000160245012600200260004900326300002400375490005200399504003000451650001300481830004800494agr28000634 DLC20260227110947.0870515s1928    stk      b    00010 eng c  aagr28000634 //r87  aLibrary, U.S. Dept. of Agriculture/ICUcICU0 aQH366b.R710aRobson, G. C.q(Guy Coburn),d1888-14aThe species problem,ban introduction to the study of evolutionary divergence in natural populations,cby G.C. Robson ...0 aEdinburgh,aLondon,bOliver and Boyd,c1928.  avii, 283 p.c23 cm.1 aBiological monographs and manuals ...vno. VIII  aBibliography: p. 259-277. 0aSpecies. 0aBiological monographs and manuals ;vno. 8.