TY  - BOOK
AU  - Mann,D.G.
ED  - Seventh internationl diatom symposium 
TI  - Proceedings of the seventh internationl diatom symposium: Philadelphia, august 22-27, 1982 
SN  - 3874292177
PY  - 1984///
CY  - Koenigstein
PB  - Otto Koeltz, science publishers
ER  -