Philippines (Republic) Bureau of Public Schools. (1957). Conservation of soil and water for the elementary schools. [s.n.].
Chicago Style (17th ed.) CitationPhilippines (Republic) Bureau of Public Schools. Conservation of Soil and Water for the Elementary Schools. Manila: [s.n.], 1957.
MLA (9th ed.) CitationPhilippines (Republic) Bureau of Public Schools. Conservation of Soil and Water for the Elementary Schools. [s.n.], 1957.
Warning: These citations may not always be 100% accurate.