000 00379nam a2200145Ia 4500
008 130223s9999 xx 000 0 und d
100 _aSillanpaa, M.
245 _aInfluence of some physical soil properties on subsoil structure
260 _aHelsinki
260 _c1959
300 _a24 p.
440 _aMaatalouskoelaitoksen Maatutki
901 _pS943
942 _cB
_2udc
999 _c125507
_d125507