pISSN : 1598-706X / eISSN : 2288-8381
Journal of Korea Foundry Society 1989 december ;9(6) : 474-482
Journal of Korea Foundry Society 1989 december ;9(6) : 483-489
Journal of Korea Foundry Society 1989 december ;9(6) : 490-500
Journal of Korea Foundry Society 1989 december ;9(6) : 463-473