A manual of the fresh-water algae in North Carolina
[by] L. A. Whitford and G. J. Schumacher.
[Raleigh] : North Carolina Agricultural Experiment Station, 1969.
313 págs. : ilustraciones ; 23 cm.
Serie: Technical bulletin North Carolina Agricultural Experiment Station ; nº 188
En cubierta: Fresh-water algae in North Carolina.
Bibliografía: p. 158-161.