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14Published 2004Other Authors: “...Ravindran pn,nirmal babu k,shylaja m...”
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16Published 2006Other Authors: “...Nirmal Babu,K...”
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17Published 2006Other Authors: “...Ravindran pn,nirmal babu k,shiva kn,johny a kallupurakkal...”
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20Published 2017Other Authors: “...Nirmal Babu, B, Ed...”
Printed Book