00439nam a22001697a 4500 CEME 20210628203642.0 210317b xxu||||| |||| 00| 0 eng d 0-85226-190-X . 621.3815287 DUB'T Dubey, G. K , Doradla, S. R , Joshi, A 66715 Thyristorised power controlled NEW DELHI WILEY EASTERN 1986 825P BK ddc 574633 574633 0 0 0 0 CEME CEME GEN 2017-07-31 0 621.3815287 DUB'T CEME-27108 2021-06-28 2021-06-28 BK