Lead Industries Association, N.Y. (1952). Lead in modern industry: Manufacture, applications and properties of lead, lead alloys, and lead compounds. Lead Industries Assoc..
Lua i Stíl Chicago (17ú heag.)Lead Industries Association, N.Y. Lead in Modern Industry: Manufacture, Applications and Properties of Lead, Lead Alloys, and Lead Compounds. N.Y.: Lead Industries Assoc., 1952.
Lua MLA (8ú heag.)Lead Industries Association, N.Y. Lead in Modern Industry: Manufacture, Applications and Properties of Lead, Lead Alloys, and Lead Compounds. Lead Industries Assoc., 1952.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.