TY  - BOOK
AU  - Lewin,Roger
ED  - Smithsonian Institution.
TI  - Thread of life: the Smithsonian looks at evolution 
SN  - 0895990105
U1  - 333.95 23
PY  - 1982///
CY  - Washington, D.C.
PB  - Smithsonian Books
KW  - Evolution (Biology)
KW  - Evolución
KW  - Biodiversidad
ER  -