Details
Houzeau, Louis:
Guide Pratique ..... L'Appareil Morse ...., third edition, 1878 and sixth edition, 1882 (3 copies); and a further copy, lacking fly-leaf (5)
Guide Pratique ..... L'Appareil Morse ...., third edition, 1878 and sixth edition, 1882 (3 copies); and a further copy, lacking fly-leaf (5)