000 00327nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aN. Narayanan & N. Nagaratnam
245 0 _aHeat
250 _a1st Ed
260 _aChennai
260 _bThe National Publishing & Co
260 _c1987
650 _aHeat
942 _cBK
999 _c14643
_d14643