Vacuum cleaning systems : a treatise on the principles and practice of mechanical cleaning T Technology
Vacuum tubes in wireless communication : a practical textbook for operators and experimenters T Technology
Vademecum des praktischen Photographen : gründliche Anweisung zur Erzeugung von Lichtbildern auf Glas, Papier, Stein, Holz, Wachstuch, Metall, u.s.w. … : nebst einer Einleitung, Die Geschichte der Photographie und ihre Theorie vom chemischen Standpunkte, einem Versuche zu einer photographischen Nomenclatur, sowie einer photographischen Optik T Technology
Valuable secrets concerning arts and trades, or, Approved directions from the best artists, for the various methods of engraving on brass, copper, or steel, of the composition of metals and varnishes, of mastichs and cements, sealing-wax, &c. .. T Technology
The value of instruction in the mechanic arts; an address before the American institute of the city of New York, on Wednesday evening, October second, 1889 T Technology
