By Humphrey, James Harry.
Springfield, Ill., U.S.A. C.C. Thomas 1985 .
xiii, 195 p. 24 cm..
0398050503

By Humphrey, James Harry.
Dubuque, Iowa W.C. Brown Co. 1972 .
xi, 260 p. , In the earlier editions Irwin's name appeared first on the title-page.

By Humphrey, James Harry.
Springfield, Ill. Thomas 1970 .
vi, 184 p. 24 cm..

By Humphrey, James Harry.
Commack, N.Y. Nova Science Publishers 1998 .
xi, 239 p. 24 cm..
1560725141