000 00323nam a2200121Ia 4500
008 130225s9999 xx 000 0 und d
080 _a620.91
_bI61P
245 _aProceedings: National energy data systems
260 _aNew Delhi
_bConcept Publishing Company
_c1983
300 _a511p.
901 _a272895
942 _cB
_2udc
999 _c17111
_d17111