Discovering electronic clocks /
Phillips, W. D.,
Discovering electronic clocks / W. D. Phillips. - 120 pages : illustrations ; 30 cm
9780953012916 0953012913
Electronic clocks and watches--Design and construction.
Clock (general) Design & Technology Phillips, W[illiam] D[onald] electronic
Discovering electronic clocks / W. D. Phillips. - 120 pages : illustrations ; 30 cm
9780953012916 0953012913
Electronic clocks and watches--Design and construction.
Clock (general) Design & Technology Phillips, W[illiam] D[onald] electronic