TY  - BOOK
AU  - White,Michaeal J.D..
TI  - Modes of speciation / 
SN  - 0716702843
U1  - 576.86 
PY  - 1978///
CY  - San Franciso : 
PB  - W. H. freedom and company , 
KW  - ORIGEN OF SPECIES
N1  - Aseries books in biology; Includes bibliographry and index
ER  -