Those inventive Americans.
Produced by the National Geographic Special Publications Division. Foreword by Leonard Carmichael.
- [Washington, National Geographic Society, 1971]
- 231 pages illus. (part col.), portraits (part col.) 27 cm.
- [National geographic special publications] .
0870440896
75125340
Inventors--United States.
T39 / .T5
609.73 / NAT
0870440896
75125340
Inventors--United States.
T39 / .T5
609.73 / NAT