TY  - BOOK
AU  - Conference on "Ecosystem", Alta, Utah, July 1-5, 1974
AU  - Levin, Simon A. ; ed.
TI  - Ecosystem; analysis & prediction: ; proceedings of a SIAM-SIMS conference . 2nd ed.
U1  - 519.5024574 
PY  - 1976///
CY  - Philadelphia
PB  - SIAM
ER  -