TY  - BOOK
AU  - Beyers,Robert J
AU  - odum,howard t
TI  - Ecological microcosms
SN  - 0387979808
U1  - 577.5 
PY  - 1993///
CY  - New York
PB  - Springer-Verlag
KW  - Closed ecological systems
KW  - human ecology
ER  -