by SHEFFIELD WILBUR L
Year of Publication 22.08.1967

by SHEFFIELD WILBUR L
Year of Publication 25.07.1967

by SHEFFIELD WILBUR L
Year of Publication 25.07.1967

by WILBUR L. SHEFFIELD
Year of Publication 29.11.1949

by SHEFFIELD WILBUR L
Year of Publication 30.08.1949

by WILBUR L. SHEFFIELD
Year of Publication 04.11.1947

by SHEFFIELD WILBUR L
Year of Publication 18.02.1947

by WILBUR L. SHEFFIELD, JOHN H. LEWIS
Year of Publication 19.12.1961

by SHEFFIELD WILBUR L, LEWIS JOHN H
Year of Publication 25.10.1960

by SHEFFIELD WILBUR L, LUTZ EARLE R
Year of Publication 11.08.1959

by WILBUR L. SHEFFIELD, JOSEPH L. MORRO, ERMAN V. CAVAGNERO
Year of Publication 02.12.1969

by WILBUR L. SHEFFIELD, JOSEPH L. MORRO, ERMAN V. CAVAGNERO
Year of Publication 18.03.1969

by LANE; ALAN J, POKORSKI; JOHN P, JARVIS; WILLIAM A, SHEFFIELD; WILBUR L, KIRBY; JOHN
Year of Publication 01.10.1985