Brumbaugh, Douglas K., (1939-)

Teaching secondary mathematics by: Brumbaugh, Douglas K., (1939-); NetLibrary, Inc.; Rock, David, (1964-) (書目-電子資源)

Teaching secondary mathematics / by: Brumbaugh, Douglas K., (1939-) (書目-語言資料,印刷品)

Mathematics content for elementary teachers by: Brumbaugh, Douglas K., (1939-); Moch, Peggy L.; Wilkinson, Mary E.; NetLibrary, Inc. (書目-電子資源)

Teaching K-6 mathematics by: Brumbaugh, Douglas K., (1939-); NetLibrary, Inc. (書目-電子資源)