First draft on East Calcutta wetlands (1986) published by Dept. of fisheries, govt. of West Bengal -a guide for Institute of Wetland Management & Ecological Design (IWMED). Young wetland scientist Dr. Drubajyoti Ghosh appointed as its director.
Location for Ramsar conference (Amsterdam -1992). Conference identifies the wise use of Calcutta city waste as one of the significant ones in the list of 17 case studies from all over the world.