1962, Rane L. Curl, "Speleology," Science, New Series, vol. 137, no. 3526, p. 285:The symposium on physical speleology had six sessions, at which 33 papers were presented, on the origin and morphology of caves, economic speleology, cave sediments, climatology of caves, caves around the Mediterranean, regional karstology, general karstology . . .
