Weerahewa, H. L. J., <p>Department of Agriculture Economics and Business Management, Faculty of Agriculture, University of Peradeniya, Sri Lanka</p>
Weerasinghe, W.D.P., <p>Regional Rice Research and Development Center, Bombuwela, Sri Lanka</p>
Wijijayanti, Trisetia, <p><em>Faculty of Economics and Business, Universitas Negeri Malang, Malang, East Java, 65145, Indonesia</em></p>
Wulandari, Ratna Dwi, <p><em>Faculty of Public Health, Universitas Airlangga, Surabaya 60115, Indonesia</em></p>

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