000 00322nam a2200145 4500
082 _a370
_bJON.E
084 _2Colon Classification
100 _aJonsson
245 _aEconomy of energy /
_cby Jonsson
246 _aThe economy of energy
260 _c1973.
300 _a80p. :
650 _aEducation
942 _cBK
999 _c682227
_d682227