Bell, R. E. (1978). Guide to the identification of certain American Indian projectile points. Oklahoma City: Oklahoma Anthropological Society.
சிகாகோ பாணியிலான மேறà¯à®•ோளà¯à®•ளà¯Bell, Robert Eugene. Guide to the Identification of Certain American Indian Projectile Points. Oklahoma City: Oklahoma Anthropological Society, 1978.
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