000			00670nad a22001577a 4500
008			120525s1909 -us||||| |||| 00| 0 eng d
041			_aeng
100	1		_aWilson, Edmund B.
245	1		_aDifferences in the chromosome -groups of closely related species and varieties, and their possible bearing on the "physiological species." / _cEdmund B. Wilson
260			_aCambridge, Mass. : _b[s.n.], _c1909
300			_a2 p. ; _c24 cm
500			_aTav. di studio SZN ;
500			_aReprint: Advance print from the proceedings of the Seventh International Zoological Congress, Boston Meeting, August 19-24, 1907
760			_03831 _93831 _tHexapoda. _w3831
942			_2ddc _cPM
999			_c33871 _d33871