@8953911070Active 6 years, 2 months agoActivityProfileFriends 1Groups 2PersonalMentionsFavoritesFriendsGroups Show: — Everything —UpdatesFriendshipsNew GroupsGroup MembershipsGroup UpdatesPostsComments Dr.Alak Kumar Singh joined the group International Journal of Community Science and Technology 9 years, 8 months ago International Journal of Community Science and Technology View group