000 00604nam a22001817a 4500
003 BD-DhUL
005 20141014161641.0
008 141014s1964 xxua|||| |||| 000 0 eng d
040 _aBD-DhUL
_cBD-DhUL
082 0 0 _a540
_bORC
100 1 _aOrttung, William Herbert.
245 1 _aChemistry unit /
_cWilliam Herbert Orttung.
260 _aChicago :
_bEncyclopaedia Britannica Educational Corporation,
_c1964.
300 _a[8], 113 p. :
_bill. ;
_c27 cm.
490 0 _aTEMAC programmed learning materials ;
_aGeneral science series
650 0 _aChemistry
_vProgrammed instruction.
942 _2ddc
_cBK
999 _c14623
_d14623