Texas 15th16th17th18th19th20th21st22nd23rd24th25th Subcategories This category has the following 10 subcategories, out of 10 total. 0–9 1900s in British Guiana (5 C, 1 P) 1910s in British Guiana (4 C) 1920s in British Guiana (7 C) 1930s in British Guiana (5 C, 1 P) 1940s in British Guiana (6 C) 1950s in British Guiana (10 C) 1960s in British Guiana (10 C)D 20th-century disestablishments in British Guiana (3 C)E 20th-century establishments in British Guiana (8 C)Y Years of the 20th century in British Guiana (35 C)