National Committee on Irrigation Research. (1959). Produce more dry season crops by improved irrigation methods: Level furrow irrigation for the Philippines. [s.n.].
Cita Chicago (17th ed.)National Committee on Irrigation Research. Produce More Dry Season Crops by Improved Irrigation Methods: Level Furrow Irrigation for the Philippines. Manila: [s.n.], 1959.
Cita MLA (9th ed.)National Committee on Irrigation Research. Produce More Dry Season Crops by Improved Irrigation Methods: Level Furrow Irrigation for the Philippines. [s.n.], 1959.
Atenció: Aquestes cites poden no estar 100% correctes.