http://www.gutenberg.org/ebooks/author/49078.opds 2024-11-09T16:50:23Z Books by Judd, Charles Hubbard (sorted by popularity) Free eBooks since 1971. Project Gutenberg https://www.gutenberg.org webmaster@gutenberg.org https://www.gutenberg.org/gutenberg/favicon.ico 25 1 2024-11-09T16:50:23Z https://en.wikipedia.org/wiki/Charles_Hubbard_Judd See also: en.wikipedia 2024-11-09T16:50:23Z https://sendtokindle.compellingsciencefiction.com/ebooks/56903.opds Introduction to the scientific study of education Charles Hubbard Judd