Tilden, Josephine E The Myxophyceae of North America and adjacent regions by J. Tilden - Lehre; Codicote Wheldon & Wesley 1968 - vi, 328 p. 22 cm ISSN: 78374320 Subjects--Topical Terms: Cyanobacteria - North America Dewey Class. No.: 589.8097 TIL