Member university grants commission for higher education, New Delhi. Lecturer Sri Lanka, Bangladesh, Thailand, Singapore, Malaysia, Japan, England, Germany, Switzerland, Italy, Russia, Lithuania, Latvia, Bulgaria, United States, Canada, Rome. Founder Ramakrishna Mission's Educational Complex and Blind Boys' Academy at Narendrapur, 1957.
Relief worker Burma 1936, Bangladesh, 1971-1972. Worked for education and welfare of slumdwellers in Calcutta, rural people, and youth of West Bengal, 1946-1998.
Volunteer education and welfare of slumdwellers in Calcutta, 1946-1998.