000			00370nam a2200145Ia 4500
008			140317s9999 xx 000 0 und d
082			_a551.48
100			_aUNESCO.
245			_aHydrology of marsh ridden areas: proc. of the Minsk Symp. June,1972.
260			_aParis _bUnesco _c1975
300			_a562
650			_aHydrology
653			_aHydrology
942			_2ddc _cBK
999			_c7627 _d7627