O. J. Olm

A Julian Day indicator for a digital data logger

E. A. Ripley, O. J. Olm, 1973 .

A readout circuit for the Bradley anemometer

E. A. Ripley, O. J. Olm, 1972 .

A control and readout system for the measurement of atmospheric CO2 profiles with a digital data logger

O. J. Olm, B. Saugier, E. Ripley, 1973 .