00253    a2200109   4500000002500000005001700025020001800042100001400060245002600074250001800100260002500118     nam a22     7a 450020260717143937.0  a9789388902786  aVAMAN RAO  aBIOLOGY FOR ENGINEERS  a1st Edition,   bIK INTERNATIONc2021