Pal PK, Arefin MB. Occurrence of a White Variety of <I>Hygrophila schulli</I> in West Bengal with a Note on its Reproductive Biology. Indian Forester [Internet]. 2007 Aug. 1 [cited 2025 Jul. 10];133(8):1136-8. Available from: http://indianforester.co.in/index.php/indianforester/article/view/1187