000 00597nam a2200169 a 4500
003 AR-LpUBP
005 20231113193354.0
007 ta
008 111101s1959 fi b g 000 0 eng d
040 _aAR-LpUBP
_bspa
_cAR-LpUBP
100 1 _aHeiskanen, W.
_959026
245 1 0 _aTopographic-isostatic reduction maps for europe and north atlantic in the hayford zones 18-1 for the airy-heiskanen system, t= 30 km and 20 km
260 _aHelsinki :
_bSuomalainen Tiedeakatemia,
_c1959.
300 _a4 p. :
_bmaps. ;
_c22 cm.
490 0 _aAnnales Academiae Scientiarum Fennicae ;
_v54
942 _aBK
999 _c550810
_d550810