TY  - BOOK
AU  - Martin,E.A.
AU  - Larkin,Sonya
ED  - Penguin (Firm)
TI  - Penguin book of the natural world
SN  - 0140037144
PY  - 1976///
CY  - Harmondsworth, England
PB  - Penguin Books
KW  - Biology
N1  - Includes index
ER  -