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APA Citation

Kallio, S., & Varheenmaa, T. (1974). On the effect of air pollution on nitrogen fixation in lichens. Reports from the Kevo Subarctic Research Station, 42-46.

Chicago Style Citation

Kallio, Sinikka, and Tuula Varheenmaa. "On the Effect of Air Pollution on Nitrogen Fixation in Lichens." Reports from the Kevo Subarctic Research Station 1974: 42-46.

MLA Citation

Kallio, Sinikka, and Tuula Varheenmaa. "On the Effect of Air Pollution on Nitrogen Fixation in Lichens." Reports from the Kevo Subarctic Research Station, 1974, pp. 42-46.

Harvard Style Citation

Kallio, S. & Varheenmaa, T. 1974. On the effect of air pollution on nitrogen fixation in lichens. Reports from the Kevo Subarctic Research Station, pp. 42-46.

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