Laredo South (TX)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by Aero Service Corporation
Date flown ?/76
Line spacing 3 (km)
Altitude 762 (m) by barometer measurement
Total distance 5,471 (km)
References
Counties Duval - Jim Hogg - Starr - Webb - Zapata
Overlapping surveys

Data: Magnetic (M-Dz)