000 00631cam a2200205 4500
001 D6030
008 090401t1981 xxu||||| |||| 00| 0 eng d
035 _a(Sirsi) u82491
041 _aeng
050 _a526.99
110 _aInternational Hydrographic Bureau
_9449
245 _aSpecial Publication No. 39. Precise positioning systems for hydrographic surveying. Positioning systems: characteristics and test procedures
250 _a2nd
260 _aMonaco
_bIFHP
_c1981
300 _a37p. 30cm
350 _a0
520 _aPresented to FIG XVI International Congress, Montreux 1981
942 _n0
948 _c04/03/1997
999 _c96788
_d96788