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- [2] GROWTH AND DIVISION OF SOME UNICELLULAR BLUE-GREEN ALGAE JOURNAL OF GENERAL MICROBIOLOGY, 1968, 51 : 199 - &
- [4] NITROGEN FIXATION BY UNICELLULAR BLUE-GREEN ALGAE ARCHIV FUR MIKROBIOLOGIE, 1971, 76 (04): : 341 - &
- [5] ULTRASTRUCTURE OF HETEROCYST AND AKINETE OF BLUE-GREEN ALGAE ARCHIV FUR MIKROBIOLOGIE, 1963, 47 (01): : 19 - &