000 00446nam a2200181 4500
001 19034/75
003 KEPU
005 20130515015745.0
008 111112s9999 xx 000 0 und d
020 _a0 335 02004 6
040 _aDLC
_bDLC
_cDLC
100 1 _a"0, . "
_93953
245 1 0 _acovaleny compounds:
_b/
_c ..
250 _a1 ed.
260 _auk :
_bthe open university press
_c1971.
300 _a", 96p.;
_c30 cm."
942 _2lcc
_cBK
999 _c55418
_d55418