Palmer, A. R. BROWN'S SIGNALLING: HOW TO LEARN THE INTERNATIONAL CODE OF VISUAL AND SOUND SIGNALS.
Chicago (17e ed.) BronvermeldingPalmer, A. R. BROWN'S SIGNALLING: HOW TO LEARN THE INTERNATIONAL CODE OF VISUAL AND SOUND SIGNALS. 8TH ED. REVISED LBY A.R. PALMER. GLASGOW, BROWN, SON & FERGUSON, 1969. 223P.
MLA (8e ed.) BronvermeldingPalmer, A. R. BROWN'S SIGNALLING: HOW TO LEARN THE INTERNATIONAL CODE OF VISUAL AND SOUND SIGNALS.
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