Volume 12 Number 12 (Dec. 2021)

Article#	Title & Authors	Page
1360	Integrated Anaerobic-Aerobic Sequencing Batch Reactors for Unrestricted Reuse Using Greywater Treatment by Sarath Chandra Pragada and Arun Kumar Thalla	346
1361	Describing Aerosol and Assessing Health Effects in Lima, Peru by Odón R. Sánchez-Ccoyllo, Carol Geimy Ordoñez-Aquino, Jessica Arratea-Morán, Nélida S. Marín-Huachaca, and Warren Reátegui-Romero	355
1362	The Effect of Soil and Water Conservation Structures on the Soil Physical and Chemical Properties in the Gidabo River Sub-basin, Ethiopian Rift Valley by Getahun Hassen, Amare Bantider, Abiyot Legesse, and Malesu Maimbo	363
1363	Analysis and Prediction of Meteorological Drought Area by Using Standardized Precipitation Index in Northeast, Thailand by Sirimanee Kornkosa, Nutthakarn Phumkokrux, Patiya Pattanasak, and Supaporn Manajitprasert	372