TY  - REP
AU  - Koenig,H.E.
AU  - Tummala,R.L.
TI  - Energy, environment and agriculture:  a system's perspective [Energy supplies, quality and real costs, U.S.]
U1  - 83-906073 
PY  - 1981///
KW  - Energy resources and management
KW  - USA
N1  - ill. Includes 4 ref
ER  -