Biotic communities.

[NT 60487] Overview

[NT 60478] Works:	2 [NT 60520] works in 2 [NT 60521] publications in 1 [NT 60522] languages

[NT 60480] Titles

Human ecology : basic concepts for sustainable development [NT 59711] by: Marten, Gerald G. ([NT 1579] Language materials, printed)

Fundamentals of ecosystem science [NT 59711] by: Weathers, Kathie.; Strayer, David L.; Likens, Gene E. (1935-) ([NT 8598] Electronic resources)