00900nam a2200253 k 4500001001500000005001500015008004100030040001900071041001300090049003000103052002200133056001400155082001600169100004800185245009400233260003600327300004000363502008000403653006200483900002600545950002100571963002000592965003400612KDM199124098  20200828075049920402s1991    ulkaf      AX 000   kor    a011001c0110010 akorbeng0 lEM883261lEM883262c2fDP01a539.14b이782ㅅ  a539.14230 a628.1442191 a이현동,g李鉉東,d1961-0KAC20123129410a水道管의 腐蝕防止에 關한 硏究=xCorrosion control in water pipes/d李鉉東  a서울:b漢陽大學校,c1991  axviii,147장:b삽도,도판;c26cm1 a학위논문(박사) --b漢陽大學校 大學院:c都市工學科,d1991  a수도관a부식방지aCORROSIONaCONTROLaWATERaPIPES10aLee, Hyundong,d1961-1 a비매품b\7600  a도시공학과  a수도관관리x부식방지