TY  - BOOK
AU  - DuPraw,E.J.
TI  - DNA and chromosomes
AV  - QH 600 D8 1970 
PY  - 1970///
CY  - New York
PB  - Holt, Rinehart and Winston, 
KW  - DNA
KW  - Cromosomas
N1  - Includes bibliography
ER  -