1. A NEW EPOXY EMBEDMENT FOR ELECTRON MICROSCOPY
2. 3 . F. E. Fritsch, 1965 . The Structure and Reproduction of the Algae . Cambridge Univ. Press, Vol. 1 , 791 pp .
3. 5 . K. R. Mattox, and H. C. Bold, 1962 . Phycological studies. III. The Taxonomy of Certain Ulotrichacean Algae . Univ. Texas Publ.No. 6222. 67 pp.