Published in Biol Bull, in 1969, in volume 136, pages 2-8

Published in Biol Bull, in 1969, in volume 136, pages 9-27

Published in Biol Bull, in 1969, in volume 136, pages 28-32

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Published in Biol Bull, in 1969, in volume 136, pages 274-287

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Published in Biol Bull, in 1969, in volume 136, pages 469-482

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Published in Biol Bull, in 1969, in volume 137, pages 79-94

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Published in Biol Bull, in 1969, in volume 137, pages 146-154

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