found: Work cat.: 92945128: Nguyễn, N.T. Cá biê̓n Việt Nam, 1991.
found: Beibu Wan ru gen ji hai yang sheng wu duo yang xing, 2002.foreword (Beibu Bay)
found: Col. gaz.(Tonkin, Gulf of, Mandarin Beibu, NW arm of the South China Sea bet. Vietnam and China)
found: Web. geog.(Arm of South China Sea, E of N Vietnam and W of Hainan I., S China)
found: GEOnet, Feb. 3, 2003(only 3 ppls. named Beibu listed under China; no listing for Gulf under Vietnam)
found: GeoNames [algorithmically matched](bay; 20°00ʹ00ʺN 108°00ʹ00ʺE)
found: Britannica online, Sept. 11, 2014(Gulf of Tonkin, northwest arm of the South China Sea, bounded by China (north and east), Hainan Island (east), and northern Vietnam (west). The gulf is 300 miles (500 km) long, 150 miles (250 km) wide, and up to 230 feet (70 metres) deep)
found: Wikipedia, Sept. 11, 2014(The Gulf of Tonkin (Vietnamese: Vịnh Bắc Bộ, Chinese: Beibu Wan) is a body of water located off the coast of northern Vietnam and southern China. It is a northern arm of the South China Sea. The Gulf is defined in the west by the northern coastline of Vietnam, in the north by China's Guangxi province, and to the east by China's Leizhou Peninsula and Hainan Island)