Betonamu Rōdōtō kiyaku
Subtitle: 1960-nen 9-gatsu
Series: Tōnan Ajia Chūtō shiryō
Publisher: Tōnan Ajia Chōsakai
Published: 1971
Place of publication: [Tokyo]
Language: jpn
Number of pages: 21
Notes: Translation of an English, originally in vietnamese.