00748cam a22002531 4500 6464034 BD-DhUL 20150115171246.0 720705s1945 nyuab 000 0 eng 45003155 (OCoLC)348622 BD-DhUL BD-DhUL OCoLC DLC premarc TL693 .R6 621.3841914 ROA Roberts, Henry W., 1905- Radio / by Henry W. Roberts, with an introduction by Dr. Lee de Forest. New York : W. Morrow & Company, 1945. xv, 637 p. : ill. : 22 cm. includes index. Radio in aeronautics. 7 cbc oclcrpl u ncip 19 y-gencatlg ddc BK 31851 31851 0 0 ddc 0 621_384191400000000_ROA 0 NFIC 59972 DUSL DUSL GEN 2015-01-15 Purchased 621.3841914 ROA 49308 2015-01-15 2015-01-15 BK