Gadow's hypothesis of "orthogenetic variation" in chelonia : with a note on diversity in its relation to locality or species /
Coker, Robert E.
Gadow's hypothesis of "orthogenetic variation" in chelonia : with a note on diversity in its relation to locality or species / by Robert E. Coker - Baltimore, Md. : Johns Hopkins University, 1905 - 9-24 p. ; 25 cm - The Johns Hopkins University Circulars ; n. 178 .
Gadow's hypothesis of "orthogenetic variation" in chelonia : with a note on diversity in its relation to locality or species / by Robert E. Coker - Baltimore, Md. : Johns Hopkins University, 1905 - 9-24 p. ; 25 cm - The Johns Hopkins University Circulars ; n. 178 .