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agricultural engineering department coomarasamy chidambaram aetc tiruchirapalli agricultural machinery and equipments minor irrigation schemes coomarasamy.c ppt training to aed technical staff aed agricultural engineering training centre c.coomarasamy ppt tamil nadu chidambaram coomarasamy land development schemes agricultural machinery training centre training on newly developed agricultural machine farm equipments tiruchirapalli tractors cc ppt bharath university bam 704 automobile engineering anna university affiliated at 6801 vehicle body engineering seventh semester