TY  - BOOK
AU  - Avers Charlotte J.
TI  - Process and pattern in evolution
SN  - 0195052757
AV  - QH366.2 .A933 1989 
PY  - 1989///
CY  - New York
PB  - Avers
KW  - Pattern
N1  - Includes bibliographies and index
ER  -