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Lua i Stíl Chicago (17ú heag.)Symposium on Precast Techniques in Irrigation and Power Structures Delhi agus India. Central Board of Irrigation and Power. Symposium on Precast Techniques in Irrigation and Power Structures: Papers. New Delhi: Central Board of Irrigation & Power, 1968.
Lua MLA (8ú heag.)Symposium on Precast Techniques in Irrigation and Power Structures Delhi agus India. Central Board of Irrigation and Power. Symposium on Precast Techniques in Irrigation and Power Structures: Papers. Central Board of Irrigation & Power, 1968.