G.B. · G.O. · G. O. Blough · Glen O.
Holt McDougal · Littlehampton Book Services Ltd
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Discovering Plants | 978-0-437-27500-4 (0-437-27500-0) | 1967 | |
| Elementary School Science and How to Teach it | 978-0-03-091539-0 (0-03-091539-2) | 1974 | Julius Schwartz |