TY  - RPRT
TI  - Environment, semantics, and system theory in ecology.
AU  - D A Maelzer
PY  - 1965
DO  - 10.1016/0022-5193(65)90018-4
UR  - https://pubmed.ncbi.nlm.nih.gov/5875310/
ID  - 5875310
ER  -