Sasiprapa, W., Ratanariwong , S., Sarawat, V., Somkid, S. and Wannasai, N. 2011. Using GUMCAS to Identify Site Specific Cassava (Manihot esculenta Crantz) Cultivar and Planting Duration. Thai Agricultural Research Journal. 29, 2 (Sep. 2011), 147–160. DOI:https://doi.org/10.14456/thaidoa-agres.2011.22.