海量图书期刊资源,随时随地畅享阅读乐趣
From the editorRalph Segman · 1993
Should we laugh or cry?Ralph Segman · 1992
Communicating technology: An historical viewRalph Segman · 1989
ReflectionsRalph Segman; David A. Tansik · 1981
An appreciation and plansRalph Segman · 1988
TimingRalph Segman · 1989
ESSA Doppler Radar SystemSegman, Ralph · Weatherwise · 1970
Medicine Turns to ElectronicsSegman, Ralph · The Science News-Letter · 1959