TY  - BOOK
AU  - Ashton, Beryl Grace.
TI  - Genes, chromosomes and evolution
T2  - The Principles of modern biology
AV  - QH431 .A717
U1  - 575.1 
PY  - 1967///
CY  - London
PB  - Longmans
KW  - Genetics
N1  - Bibliography: p. 162-165
ER  -