Petroglifler (Topical Term)

Francke, A.H. First collection of Tibetan historical inscriptions on rock and stone from Ladakh Himalaya, 2003.

Zába, Z. The rock inscriptions of lower Nubia (Czechoslovak concession), 1974.

Caminos, R.A. The shrines and rock-inscriptions of Ibrim, 1968.

Desai, P.B. Select stone inscriptions of Andhra Pradesh, 1962.

Hill, B. Guide to Indian rock carvings of the Pacific Northwest coast, c1975.

Dowson, T.A. Rock engravings of Southern Africa, 1992.

Wilman, M. The rock-engravings of Griqualand West & Bechuanaland South Africa, 1933.

American Heritage dictionary of the English language, via WWW, Dec. 8, 2003 (petroglyph: A carving or line drawing on rock, especially one made by prehistoric people)

MSN learning website, Dec. 8, 2003: dictionaries (petroglyph: prehistoric rock drawing: a prehistoric drawing done on rock)

Merriam-Webster dict., via WWW, Dec. 8, 2003 (petroglyph: : a carving or inscription on a rock)