National topographic map series, 1:25,000 [cartographic material] : [Philippines] /

Various eds. Relief shown by contours and spot heights. Depths shown by contours and soundings.; Topographic information reliable to 1981-.; Sheets individually titled in upper margin, e.g.: Region 1, Province-Pangasinan, Municipality-Bolinao : Bolinao, Philippines.; Sheets individually titled in lower right margin, e.g.: Bolinao, 1:25000.; Sheets individually numbered in upper right margin, e.g.: Map sheet 2933-1 A.; Sheets individually numbered in lower right margin, e.g.: PNTMS 2933-1 A.; Some sheets produced coperatively by the Republic of the Philippines and the Government of Japan.; Some sheets produced with assistance from UNDP/UNDTCD.; Includes various issues of some sheets.; Includes sheet index and "Locality diagram."; Map series of Philippines showing roads, trails, railways, built-up areas, buildings, antiquity sites, airports, boundaries, water features, forests and rice fields.National topographic map series, Philippine