Winit Chinsuwan,Winit Chinsuwan..[et al.]. 1991. Groundnut mechanization project IDRC file no.3-P-87-0041. Khon Kaen:Khon Kaen University;

Winit Chinsuwan,Winit Chinsuwan..[et al.]. Groundnut mechanization project IDRC file no.3-P-87-0041. Khon Kaen:Khon Kaen University, 1991. Print.

Winit Chinsuwan,Winit Chinsuwan..[et al.]. (1991) Groundnut mechanization project IDRC file no.3-P-87-0041. Khon Kaen University:Khon Kaen.