assam river brahmaputra rivers system drainage tributaries area india study figure scirp
erosion river deposition 1990 2008 figure brahmaputra scirp
brahmaputra ijerph sediments mobilization fractionation implications sampling
ganges meghna brahmaputra gbm transboundary management catchment amelie paszkowski darker catchments denotes
brahmaputra tectonic different geotectonic units