00710nam a22001577a 450000500170000000800410001704000230005808200210008124502610010226000780036330000300044165000170047165000150048870000210050370000280052420181209235811.0180409s1993    bg ||||| |||| 00| 0 eng d  aBD-DhBPAcBD-DhBPA  a333.91bHYP 19931 aHypertrophic and polluted freshwater ecosystems : becological bases for water resource management : proceedings of an international symposium on limnology held in Dhaka, Bangladesh, 25- 28 november 1991 /cedited by Max M. Tilzer and Moniruzzaman Khondker  aDhaka, Bangladesh : bDepartement of Botany, University of Dhaka,c 1993.  a229 p. : bill. ; c27 cm  aHypertrophic  aecosystems  a Tilzer, Max M.   aKhondker, Moniruzzaman