I. N. Central Wa Delhi,
« Bhagirath ». India, Central Water Commission, New Delhi, India.
« Biogas newsletter Nepal ». Consolidated Management Services Nepal, Kathmandu, Nepal.
« BioMed Central Public Health ». BioMed Central, BMC, London, UK.
Biosphere Environment and Health Systems Series. Quezon City, The Philippines: Philippine Center for Water and Sanitation - The International Training Network (ITN) Foundation.
« The blue pages ». International Water Association, London, UK.
T. Jonch-Clausen, Bjerg, C., Copenhagen, D. K. Copenhagen, et DK), M. - Copenhag,
« The blue revolution : adapting to climate change », vol. 6. Copenhagen Climate Council, CCC, Copenhagen, Denmark.