TY  - BOOK
AU  - Stebbins,G.Ledyard
TI  - The basis of progressive evolution,
T2  - The John W. Harrelson lectures
AV  - QH366 .S818
U1  - 575 
PY  - 1969///]
CY  - Chapel Hill
PB  - University of North Carolina Press
KW  - Evolution (Biology)
KW  - Genetics
N1  - Bibliography: p. 147-148
ER  -