000 00320nam a2200133Ia 4500
008 240618s9999||||xx |||||||||||||| ||und||
040 _aMAIN
082 _a317
100 _aBOUND VOLUME
_933680
245 0 _aINSTRUCTIONAL SCIENCE, VOL.20,1991
260 _bKA
_c1991
_aDORDRECHT
500 _aBOUND VOLUME
942 _cBK
999 _c40710
_d40710