1973. Inter American Geodetic Survey. North Decimal Degree -19.666667. South Decimal Degree -19.833333. East Decimal Degree -68.250000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.833333. South Decimal Degree -20.000000. East Decimal Degree -68.250000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.333333. South Decimal Degree -19.500000. East Decimal Degree -68.250000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.166667. South Decimal Degree -19.333333. East Decimal Degree -68.000000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.833333. South Decimal Degree -20.000000. East Decimal Degree -68.000000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.666667. South Decimal Degree -19.833333. East Decimal Degree -68.000000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.333333. South Decimal Degree -19.166667. East Decimal Degree -68.250000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.333333. South Decimal Degree -19.500000. East Decimal Degree -68.000000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.500000. South Decimal Degree -19.666667. East Decimal Degree -68.000000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.
1973. Inter American Geodetic Survey. North Decimal Degree -19.166667. South Decimal Degree -19.333333. East Decimal Degree -68.250000. West Decimal Degr... [La Paz] : Bolivia. Instituto Geografico Militar, 1973.