Collier's Encyclopedia : with Bibliography and Index Vol. IX (Electron Gun-Fischer).
c1974.
Collier's Encyclopedia : with Bibliography and Index Vol. IX (Electron Gun-Fischer). - USA : MacMillan Educational Corporation, c1974. - 762p. : ill. ; 10.5 inch.
Collier's Encyclopedia : with Bibliography and Index Vol. IX (Electron Gun-Fischer). - USA : MacMillan Educational Corporation, c1974. - 762p. : ill. ; 10.5 inch.