00930cam a2200325 4500 2719437 BD-DhUL 20150115125935.0 730302s1948 nyua b 000 0 eng 48001249 (OCoLC)ocm00567981 (NNC)2719437 DLC WSU SER ZCU BD-DhUL TK7872.V3 S6 621.384132 621.38151 SPV Spangenberg, Karl R. 1910- Vacuum tubes / Karl R Spangenberg. 1st ed. New York : McGraw-Hill Book, c 1948. xvii, 860 p. : ill. ; 21 cm. IRS 49.40 McGraw-Hill electrical and electronic engineering series Includes index. Includes Vacuum-tubes. McGraw-Hill electrical and electronic engineering series. AUTH ddc BK 31597 31597 0 0 ddc 0 621_384132000000000 0 NFIC 59578 DUSL DUSL GEN 1972-04-06 Purchased 621.384132 A811212 2015-01-15 2015-01-15 BK