Henk69
Crowing
http://chla.library.cornell.edu/cgi/t/text/pageviewer-idx?c=chla&cc=chla&idno=2837819&q1=frizzle&frm=frameset&view=image&seq=3
F.B. Hutt
Genetics of the Fowl
1949
Interesting reading, in historical perspective
F.B. Hutt
Genetics of the Fowl
1949
Interesting reading, in historical perspective
