000 00541 a2200253 4500
001 91607
020 _a0
041 _aeng
080 _a526.8:550.81 Uni
245 _aGeological survey topographic instructions : multiplex plotter procedures
250 _a
260 _aWashington
260 _bDept of the Interior,
260 _c1960
300 _av.3/pt.3F
300 _c26 cm
490 _a
100 _aUnited States. Department of the Interior
700 _a
650 _a
650 _a
942 _cBK
942 _2UDC
999 _c35839
_d35839