Sammanō prachāk̨ōn læ khēha, Ph̨ō. S̨ō. 2533, Čhangwat Sing Burī = 1990 population and housing census, Changwat Sing Buri (Samnakngān Sathiti h̄æng Chāt, Samnak Nāyok Ratthamontrī, 1992)