In a recent note the writer and his associates showed that Indian petroglyphs might be used as criteria to indicate the stability of boulders resting on relatively steep slopes. Space did not permit a full account of the data which led to this suggestion. Accordingly, it is the purpose of this paper to amplify these data with a more complete description.
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Howard, Ben R. Jr.
"Stability Of Boulders On Slopes In The Finlay Mountains, Texas,"
Field and Laboratory: Vol. 9
Available at: https://scholar.smu.edu/fieldandlab/vol9/iss2/5