Gupta,o p. (1979). Aquatic Weeds: Their Menace and Control a textbook and manual. Today & Tomorrow's.
Styl ChicagoGupta,o p. Aquatic Weeds: Their Menace and Control a Textbook and Manual. New Delhi: Today & Tomorrow's, 1979.
Citace podle MLAGupta,o p. Aquatic Weeds: Their Menace and Control a Textbook and Manual. Today & Tomorrow's, 1979.
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