May 29, 1981
G.R. No. L-31057: Insular Lumber Company vs Court of Tax Appeals et al Full Text ¦ Case Digest
G.R. No. L-31137: Commissioner of Internal Revenue vs Court of Tax Appeals et al Full Text ¦ Case Digest
May 29, 1981
G.R. No. L-31057: Insular Lumber Company vs Court of Tax Appeals et al Full Text ¦ Case Digest
G.R. No. L-31137: Commissioner of Internal Revenue vs Court of Tax Appeals et al Full Text ¦ Case Digest