000 00300nam a2200121Ia 4500
008 160710s1963 xx 000 0 und d
082 _a622.334 PSU
100 _aDECKER,HOWARD W.
245 _aCOAL PREPARATION
260 _bTHE PENNSYLVANIA STATE UNIVERSTY
_c1963
300 _a369
942 _2ddc
_cB
999 _c51870
_d51870