Volume 12 Number 12 (Dec. 2021)

Article#	Type	Article Title & Authors (Volume 12 Number 12 (Dec. 2021))	Page
1360	Article	Integrated Anaerobic-Aerobic Sequencing Batch Reactors for Unrestricted Reuse Using Greywater Treatment by Sarath Chandra Pragada Arun Kumar Thalla	346
1361	Article	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 Warren Reátegui-Romero	355
1362	Article	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 Malesu Maimbo	363
1363	Article	Analysis and Prediction of Meteorological Drought Area by Using Standardized Precipitation Index in Northeast, Thailand by Sirimanee Kornkosa Nutthakarn Phumkokrux Patiya Pattanasak Supaporn Manajitprasert	372