Lewellen, John Bryan, 1910- [from old catalog]
Understanding electronics : from vacuum tube to thinking machine / John Bryan Lewellen - New York, Crowell [1957] - 213 p. : illus. ; 21 cm.
Includes index
57009250
Electronics--Juvenile literature. [from old catalog]
TK7820 / .L4
537.5 / LEU
Understanding electronics : from vacuum tube to thinking machine / John Bryan Lewellen - New York, Crowell [1957] - 213 p. : illus. ; 21 cm.
Includes index
57009250
Electronics--Juvenile literature. [from old catalog]
TK7820 / .L4
537.5 / LEU