Description
Item Description:Relief shown by spot heights.
"Photoimagery rectified by optical scanning from color infrared aerial photograph taken ... by the Dirección General de Geografía del Territorio National (DGGTN), Mexico D.F., Mexico."
Each sheet separately titled and numbered.
Each sheet includes quadrangle location map and diagram of adjoining color image maps.
Cartographic material.
Physical Description:maps : color ; sheets 44 x 62 cm. or smaller.