Sources of Invention
Jewkes, John
Sources of Invention by John Jewkes, David Sawers and Richard Stillerman - - London Macmillan and Co., Limited 1960 - xii,428p.
Technology
609 / JEW
Sources of Invention by John Jewkes, David Sawers and Richard Stillerman - - London Macmillan and Co., Limited 1960 - xii,428p.
Technology
609 / JEW