P.L., inventor of the Robertson screw
By: by Ken Lamb.
Contributors: Milton Historical Society.
Publisher: Milton Historical Society
Published: 1998
Place of publication: Milton, Ont
Language: eng
Number of pages: 186
Subjects: Robertson, Peter Lymburner, 1879-1951.; P.L. Robertson Manufacturing Company -- History.; Screws -- History.; Inventors -- Ontario -- Milton -- Biography.
Genres: Biography.
Notes: Includes index.