00269nam a2200109Ia 4500008004100000020001800041041000800059100002000067245002700087260003700114300000800151211209s2020    xx            000 0 und d  a9789389121711  aeng  aG K PUBLICATION  aGATE 2020 MATHEMATICS   aNEW DELHIbG K PUBLICATIONc2020  aXIX