Gertsch, Willis John, 1906-2005-10-062005-10-061958http://hdl.handle.net/2246/453253 p. : ill., map ; 24 cm.Includes bibliographical references.5312193 bytesapplication/pdfen-USQL1 .A436 no.1920, 1958PlectreuridaeSpiders -- Southwestern StatesSpiders -- MexicoArachnida -- Southwestern StatesArachnida -- MexicoThe spider family Plectreuridae. American Museum novitates ; no. 1920text