หนังสือที่แต่งโดย Walker, William P 4 Results

No.TitlePublished
1Field Trip April 19-26, 1966 with the Ministry of Industry, Techno-Economic Survey Team to Make an Industrial Survey in the Roi-et Area1966
2Field Trip, March 13-22 with the Ministry of Industry Techno-Economic Survey Team to Make an Industrial Survey in the Sakon Nakhon Area1966
3Report of Survey of Sericulture in Thailand with Recommendations and Suggested Program for Improvement and Expansion1965
4Sericulture Field Trip - Roi-Ed1965