TY  - BOOK
AU  - Bird,Richard E.
AU  - Huistrom,Roland L.
ED  - United States.
TI  - A simplified clear sky model for direct and diffuse insolation on horizontal serface
U1  - 551.5271 
PY  - 1981///
CY  - Washington, D.C.
PB  - United States Department of Energy
KW  - Solar radiation
KW  - Congresses
KW  - Sunshine
N1  - Cover title
ER  -