TY  - BOOK
AU  - Duffie, John.A, Beckman, William.A
TI  - Solar engineering of thermal processes
SN  - 0-471-69867-9
U1  - 621.47 DUF 
PY  - 2006///
CY  - USA
PB  - NUST,COLLEGE OF EME
KW  - SOLAR ENERGY
ER  -