Editions of Greg's Microscope

Paperback, 64 pages

English language

Published Sept. 27, 1990 by Harper & Row.

library binding

English language

Published June 27, 1963 by HarperCollins, Harpercollins.

school & library binding, 64 pages

English language

Published Oct. 27, 1999 by Tandem Library.

library binding, 64 pages

Published Sept. 30, 1990 by San Val, Perfection Learning.

library binding, 64 pages

Published Jan. 1, 2007 by Fitzgerald Books.

Paperback

Published Sept. 1, 1990 by Demco Media.

64 pages

English language

Published Sept. 27, 1963 by Harper & Row.

64 pages

English language

Published Sept. 27, 1963 by Harper & Row.

English language

Published Sept. 27, 1964 by Farshore.