Inside Out Library · ExploreMeasurements of vertical air currents in the atmosphere (1931)NASA Technical Reports Server (NTRS) · leaf 13K.A.C.A. Technical Memorandum No.648 Fig.6NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Measurements of vertical air currents in the atmosphereMore like this
