000 00295nam a22001217a 4500
082 _a500
_bMAJ.S
245 _aScience in the sixth form /
260 _aLondon :
_bHer Majesty's Stationery Office,
_c1966.
300 _a57p. :
500 _aWorking paper no 4
650 _aScience
942 _cBK
999 _c633229
_d633229