Bicol River Basin Development Program. (1976). Comprehensive development plan: 1975-2000. The Office.
Chicago-viite (17. p.)Bicol River Basin Development Program. Comprehensive Development Plan: 1975-2000. Baras, Canaman, Camarines Sur: The Office, 1976.
MLA-viite (9. p.)Bicol River Basin Development Program. Comprehensive Development Plan: 1975-2000. The Office, 1976.
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