TY  - BOOK
AU  - Cheng,Thomas C.
TI  - Symbiosis: organisms living together.
U1  - 574.55 CHE/S 
PY  - 1970///
CY  - . - New York
PB  - : Pegasus
KW  - Symbiosis
N1  - "A Biological sciences curriculum study book."; Includes bibliographies
ER  -