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035 _aEN-125922
037 _bDBAD
082 _a375
100 _aSengamalan, R.
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245 _aUnderstanding Disciplines and Subjects/
_bR. Sengamalan
250 _aFirst
260 _bShanlax Publications
_aMaurai
_c2021
270 _aVasantha Nagar, Madurai
_bTamil Nadu
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300 _a245p.
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