Thring, M. W.
How to invent / M.W. Thring and E.R. Laithwaite. - London : Macmillan, c1977. - vii, 173 p. : ill.
0333177940
Inventions.
Creative ability in technology.
How to invent / M.W. Thring and E.R. Laithwaite. - London : Macmillan, c1977. - vii, 173 p. : ill.
0333177940
Inventions.
Creative ability in technology.