TY  - BOOK
AU  - Levin,Simon A.
AU  - Whittaker,Robert Harding
TI  - Niche: theory and application 
T2  - Benchmark papers in ecology
SN  - 0470941170
PY  - 1975///
CY  - Stroudsburg, Pa.
PB  - Dowden, Hutchinson & Ross
KW  - Ecology
KW  - Species
KW  - Biotic communities
ER  -