TY  - BOOK
AU  - Emmel,Thomas C.
TI  - Worlds within worlds: an introduction to biology 
SN  - 0155976729 :
AV  - QH308.2 .E48
PY  - 1977///
CY  - New York
PB  - Harcourt Brace Jovanovich
KW  - Biology
N1  - Includes index
ER  -