Gray, William S. (William Scott), 1885-1960. Gray, William S. (William Scott), 1885-1960.
The teaching of reading and writing : an international survey /
by William S. Gray ; enl. ed. with a supplementary chapter by Ralph Staiger.
- [2nd ed.
- Paris] : UNESCO, [1969]
- Monographs on fundamental education ; 10 [United Nations Educational, Scientific and Cultural Organization. Document] ED.68/III.10.f/A .
- Unesco. Monographs on fundamental education ; Unesco. Monographs on fundamental education ; 10. .
- [Document] (Unesco) ; ED.6830044/I .