by Willits, Joseph H.
Published in Science (American Association for the Advancement of Science) (25.02.1949)

by Willits, Joseph H.
Published in Annals of the American Academy of Political and Social Science (01.11.1916)

by Willits, Pamela J
Published in Business First (14.11.2003)

by Willits, Joseph H.
Published in The American economic review (01.03.1935)

by Willits, Pamela J
Published in Business First (22.11.2002)

by Willits, Pamela J
Published in Business First (01.11.2002)

by Bladen, V W, Easterbrook, W T, Willits, J H
Published in The American economic review (01.03.1953)

by MARTINEZ Willits, DAVID J
Published in The Press Democrat (12.10.2003)

by GEORGE W. WILLITS JR
Year of Publication 04.02.1969

by JR. WILLITS P. HAINES
Year of Publication 15.05.1962

by GEORGE W. WILLITS, JR, WILLIAM F. UNDERWOOD, EDWARD A. SHINER
Year of Publication 21.07.1964

by JR. GEORGE W. WILLITS
Year of Publication 21.12.1965

by JR. GEORGE W. WILLITS
Year of Publication 29.06.1965