TY  - BOOK
AU  - Engels,Friedrich
AU  - Haldane,J.B.S.
TI  - Dialectics of nature
U1  - 501 E575D 1976 
PY  - 1976///
CY  - Moscow
PB  - Progress Press
KW  - Science--Philosophy
KW  - Dialectic
N1  - Includes Index
ER  -