McGraw-Hill encyclopedia of science and technology : an international reference work.
- [3rd ed.].
- New York : McGraw-Hill, [1971]
- 15 v. : ill. (part col.), maps (part col.) ; 28 cm. 15 v. : ill. (part col.), maps (part col.) ; 28 cm. 15 v. : ill. (part col.), maps (part col.) ; 28 cm.
Study guide and readers' guide in addition to main vols.