000 00352nam a2200145Ia 4500
008 130223s9999 xx 000 0 und d
100 _aBelak, S.
245 _aLeading activity in large-scale farms
260 _aKeszthely
260 _c1970
300 _a24 p.
440 _aNo. 2; Keszthely, Agricultural
901 _pS19749
942 _cB
_2udc
999 _c126550
_d126550