Sommer, A. H. 1909-2003.
Photoelectric tubes / A. H. Sommer - [2d ed., rev. and reset] - London : Methuen, c1951. - viii, 118 p. : ill. ; 18 cm. - Methuen's monographs on physical subjects .
Includes bibliographical references and index.
52003131
GB51-15238
Photoelectric cells.
QC715 / .S667 1951
621.342 / SOP
Photoelectric tubes / A. H. Sommer - [2d ed., rev. and reset] - London : Methuen, c1951. - viii, 118 p. : ill. ; 18 cm. - Methuen's monographs on physical subjects .
Includes bibliographical references and index.
52003131
GB51-15238
Photoelectric cells.
QC715 / .S667 1951
621.342 / SOP