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020 | _a9789386173089 | ||
082 | _a621.56 SAD | ||
100 | _aDR SADHU SINGH | ||
245 | 0 | _aREFRIGERATION AND AIR CONDITIONING | |
250 | _a1 ST | ||
260 | _bKHANNA BOOK PUBLISHING CO (P) LTD | ||
260 | _c2017 | ||
300 | _a802 P | ||
365 | _b499 | ||
650 | _aMECHANICAL | ||
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999 |
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