00331nam a2200121Ia 4500008004100000082001300041100002300054245003700077260003400114300001000148600002200158650002900180140224s9999    xx            000 0 und d  a025.3 M6  aRamakrishnan, M.N.  aIndexing systems and techniques/  aTrivandrumbLakshmisreec1986  a134p.  aM.N. Ramakrishnan  aLibrary science,Indexing