00651nam a22001697a 4500 BD-DhUL 20150108153604.0 150108s1973 -usa|||| |||| 000 0 eng d BD-DhUL BD-DhUL 665.7 PET Pennsylvania University National Center for Energy Management and Power Technology for the conversion of solar energy to fuel gas / Pennsylvania University National Center for Energy Management and Power Pennsylvania : National Center for Energy Management and Power, 1973. inverious pages : ill. ; 28 cm. Solar heating. ddc BK 29061 29061 0 0 ddc 0 665_700000000000000_PET 0 NFIC 54322 DUSL DUSL GEN 2015-01-08 665.7 PET A184348 2015-01-08 1 2015-01-08 BK 0 0 ddc 0 665_700000000000000_PET 0 NFIC 54324 DUSL DUSL GEN 2015-01-08 665.7 PET A184349 2015-01-08 2 2015-01-08 BK 0 0 ddc 0 665_700000000000000_PET 0 NFIC 54325 DUSL DUSL GEN 2015-01-08 665.7 PET A184350 2015-01-08 3 2015-01-08 BK