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xvii, 231 p. 24 cm..

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viii, 179 p. , 920519 29 cm..

By Ruston, Henry..
New York McGraw-Hill 1978 .
xvii, 541 p. , Includes index. 24 cm..
007054350X

By Underkoffler, Milton M..
Boston Prindle, Weber & Schmidt 1980 .
x, 272 p. , Includes index. 28 cm..
0871502925

By Davis, Charles Hargis.
Westport, Conn. Greenwood Press 1974 .
xvi, 112 p. , 920526 083717354X

By Fosdick, Howard..
Littleton, Colo. Libraries Unlimited 1982 .
304 p. , Includes index.

By Bates, Frank..
Englewood Cliffs, N.J. Prentice-Hall 1970 .
xii, 420 p.

By Bates, Frank..
Englewood Cliffs, N.J. Prentice-Hall 1967 .
viii, 375 p.

By Barbour, Edna Hollar.
London Macmillan Co. 1970 .
vi, 301 p. , Includes index.