. . "Industrial laws and legislation United States." . . "United States. National Recovery Administration," . . "Kaolin mines and mining Law and legislation United States." . . . . . "Code of fair competition for the china clay producing industry as approved on September 18, 1934"@en . . . . . . . . . . . "Amendment to code of fair competition for the retail monument industry as approved on December 18, 1934"@en . . . . . "Amendment to code of fair competition for the floor and wall clay tile manufacturing industry as approved on May 18, 1934"@en . . "Amendment to code of fair competition for the floor & wall clay tile manufacturing industry as approved on May 18, 1934"@en . .