TY  - BOOK
AU  - Kolkwitz,Richard
AU  - Krieger,H.
TI  - Zygnemales / 
U1  - 589.47 KOL 
PY  - 1944///
CY  - Leipzig : 
PB  - Akademiche Verlag, 
KW  - Zygnemaceae
KW  - Algae
N1  -  Title-page missing;  Includes bibliographical references
ER  -