References

References
Prescott, G. W., How to know the freshwater algae. Wm. C. Brown Co., Dubuque, Iowa, 1954.
Prescott
How to know the freshwater algae
1954
Schwab, Joseph J., Biology teachers' handbook. John Wiley and Sons, Inc., New York. 1960.
Schwab
Biology teachers' handbook
1960
Wood, R. D., "A review of the genus Nitella (Chara- ceae) of North America." Farlowia. 3:331-398. 1948.
Wood
331
3
Farlowia
1948
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