Archeological and ecological survey of Olovalu Crater, Island of Tutuila, American Samoa
Ladd EJ and Morris DK. 1970. Archeological and ecological survey of Olovalu Crater, Island of Tutuila, American Samoa. National Park Service. Honolulu, HI
Summary of a study on archeological features of Olovalu Crater on the island of Tutuila, American conducted from July 6-14, 1970.