TY  - BOOK
AU  - Cottrell, Alan Howard
TI  - Portrait of nature: the world as seen by modern science 
SN  - 0-684-14355-0
AV  - Q 172 C67
PY  - 1975///
CY  - New York
PB  - Charles Scribner's Sons
KW  - Ciencia
KW  - Naturaleza
ER  -