TY  - BOOK
AU  - O'Neill,R.V.
AU  - DeAngelis,D.L.
AU  - Waide,J.B.
AU  - Allen,T.F.H.
TI  - A hierarchical concept of ecosystems
T2  - Monographs in Population Biology 
SN  - 0691084378
U1  - 577 23
PY  - 1986///
CY  - New Jersey
PB  - Princeton University Press
ER  -