Mindanao 1:50,000 [cartographic material] /

1st ed.-AMS 1; 1st ed.-SWPA 1; 2nd ed.-SWPA 2. Topographic map series of Mindanao showing transportation, communication, water features, land use, vegetation and populated places. Relief shown by soundings, shading, form lines, contours and spot heights. Some maps give heights and depths in feet, others give depths in fathoms.; Includes boundaries, reliability diagram, legend, index to sheets, approximate mean variation, annual magnetic change and Philippine polyconic grid data.; Standard map series designation: [Series] S751.; Set includes various issues of some sheets, e.g. sketch maps, advanced edition subject to correction, produced by various agencies such as SWPA, Engr. Topo. Co., Aust. Svy Corps.; Each sheet is named and numbered individually.; A.M.S. S751, SWPA S751, SWPA S752.; Sources include K-17 vertical photography, aerial photographs and mosaics of small scale air photos.; Some issues are divided into numbered grids drawn for target-area designator.; Some maps carry notations like ADV/286/0561; L.H.Q./286/3245.Series S75