Vorapitirangsree, V., Jaipin, P. ., Vorapitirangsree, S., Bumphenyoo, W., Kaewseeda, W. and Hanviriyapan, P. (2013) “Production System Trial of Longon Low Canopy Pruning Orchard in Chiang Rai Province”, Thai Agricultural Research Journal, 31(1), pp. 69–77. doi: 10.14456/thaidoa-agres.2013.19.