A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Tomoo Hattori, Tadayo Watabe, Ponpit Piyapongse, Keizaburo Kawaguchi. "Soil characteristics and the paddy yield in northern Thailand." Tonan ajia kenkyu 6.2 335-350