TY  - BOOK
AU  - Burnham P.C. (Ed.)
AU  - Burnham P.C. (Ed.) Ellen R.F. (Ed.)
TI  - Social and ecological systems
U1  - Y1z7 
PY  - 1979///
CY  - London
PB  - Academic Press Inc.
KW  - Y1z7
ER  -