00491nam a22001817a 4500 BD-DhUL 20180129111329.0 180129s1965 xxua|||| f||| 00| 0 eng BD-DhUL BD-DhUL 621.31 SPD Spring, K. H. Direct generation of electricity / K. H. Spring. London : Academic press, 1965. 410 p. : ill. ; 23 cm. Includes index. Electricity ddc BK 237562 237562 0 0 ddc 0 621_310000000000000_SPD 0 NFIC 361479 DUSL DUSL GEN 1969-05-17 Purchased 621.31 SPD A58792 2018-01-29 2018-01-29 BK