PeerJ Author 135 Points Contributions by role Author 135 Contributions by subject area Natural Resource Management Ecohydrology Food, Water and Energy Nexus Chugiat Ponkaew PeerJ Author Summary Ecohydrology Food, Water & Energy Nexus Natural Resource Management PeerJ Contributions Articles 1 December 13, 2022 New estimators for estimating population total: an application to water demand in Thailand under unequal probability sampling without replacement for missing data Chugiat Ponkaew, Nuanpan Lawson https://doi.org/10.7717/peerj.14551 PubMed 36530395