. . . . . "Al W." . "California and Great Basin olivella shell bead guide / Randall T. Milliken, Al W. Schwitalla, 2012. - . - LC Authorities. - http://authorities.loc.gov. - 2013-06-25"@fr . . "2013-12-18" . "0000000371366926" . . "2013-06-11" . . . . "2013-12-17"^^ . . . . "Schwitalla" . "16689646"^^ . "Al W. Schwitalla"@fr . . . . "ISNI" . . "Al W. Schwitalla" . .