National Productivity Council. (1963). Report no.28 glass industry in Britan and U.S.A. N.P.C.
Chicago Edition CitationNational Productivity Council. Report No.28 Glass Industry in Britan and U.S.A. N.P.C, 1963.
ציטוט MLANational Productivity Council. Report No.28 Glass Industry in Britan and U.S.A. N.P.C, 1963.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.