Newby, Frank.
How to find out about patents / Frank Newby. - London : Pergamon press, c 1967. - xi, 177 p. : ills. ; 20 cm.
Includes index.
345 345
Patent literature.
608.7 / N249h
How to find out about patents / Frank Newby. - London : Pergamon press, c 1967. - xi, 177 p. : ills. ; 20 cm.
Includes index.
345 345
Patent literature.
608.7 / N249h