1978. Powell, Susan and Navarro, Fernando. This line dataset represents roads in Mongolia in 1978. Each road segment includes an attribute describing whether it is an "all-weather hard or lo... UC Berkeley Library.
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1991. Powell, Susan and Navarro, Fernando. This line dataset represents the locations of major roads in Mongolia in 1991. The dataset was developed as part of the Mongolian 20th-century Hist... UC Berkeley Library.