00626nam a22001817a 4500 BD-DhUL 20181202104434.0 150514s1980 u a|||| |||| 001 0 eng d BD-DhUL BD-DhUL 016.621 NAS National technical Service Solar water pumps : citations from the engineering index data base ,search period covered 1970-November1979 / National technical Service United States : National technical Service, 1980 various pagings : ill. ; 25 cm. Includes Index. Bibliography ddc BK 36278 36278 0 0 ddc 0 016_621000000000000_NAS 0 NFIC 67373 DUSL DUSL GEN 2015-05-14 Purchased 016.621 NAS A184345 2015-05-14 2015-05-14 BK