Amphibians West Indies., Herpetology West Indies., Reptiles West Indies.
Evolution, Stars, Formation, Stellar dynamics
Climate change, Agriculture, Science, Water resources, Hydrology, China, Irrigation, California, Water quality, desalination, Digestion, Salinity, Water treatment, Sweden, Anaerobic digestion, Reuse, Middle East, Sewage sludge, Water reuse, Anaerobic processes, Euphrates River, Baghdad Iraq, United States–US
Archaeology, Editors, Cultural heritage
Human ecology, Sustainable development, Environmental Economics, development, etc, Handbooks, manuals, BUSINESS & ECONOMICS, Estudio y enseñanza, Estudio y enseñanza