Breder, Charles M. (Charles Marcus), 1897-2005-10-062005-10-061955http://hdl.handle.net/2246/817p. 177-219, 2 p. of plates : ill. ; 27 cm.Includes bibliographical references (p. 217).14521687 bytesapplication/pdfen-USQH1 .A4 vol.106, art.3, 1955Symmetry (Biology)Observations on the occurrence and attributes of pentagonal symmetry. Bulletin of the AMNH ; v. 106, article 3Pentagonal symmetrytext