Directory of North Dakota inventions and inventors.
Contributors: Torkelson, David R.; Paris, Ferne.; North Dakota Inventors Association.
Edition: 3d ed., rev. by David R. Torkelson and Ferne Paris [of the staff of the North Dakota Economic Development Commission.
Publisher: North Dakota Inventors Association in cooperation with North Dakota Economic Development Commission
Published: 1965
Place of publication: Bismarck]
Language: eng
Number of pages: 52
Subjects: Inventions -- North Dakota -- Directories.; Inventors -- North Dakota -- Directories.