TY  - RPRT
TI  - Method of testing for rating solar collectors base on thermal performance 
AU  - Hill, James E
AU  - Kusuda, Tamami
PY  - 1974
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 74-635
DO  - 10.6028/NBS.IR.74-635
ER  -