TY  - BOOK
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TI  - 20(à¤¬à¥à¤¸) à¤à¤£à¤¿à¤¤ à¤ªà¥à¤°à¥à¤à¥à¤à¥à¤à¥à¤¸
SN  - 9788188318825
U1  - 511.8 
PY  - 2022///
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KW  - Mathematics
KW  - Study and teaching
ER  -