of the Philippine Islands 1921

of the Philippine Islands, Census Office. 1921. Census of the Philippine Islands taken under the direction of the Philippine Legislature in the year 1918 (Vol. II: Population and Mortality). Manila: Bureau of Printing.

https://archive.org/details/censusofphilippi03philiala

@techreport{censusofficeofthephilippineislands1918,
  address   = {Manila},
  author    = {of the Philippine Islands, Census Office},
  publisher = {Bureau of Printing},
  title     = {Census of the Philippine Islands taken under the direction of the Philippine Legislature in the year 1918 (Vol. II: Population and Mortality)},
  url       = {https://archive.org/details/censusofphilippi03philiala},
  year      = {1921}
}