by Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1962
Buku Teks
Lundy, James L., author
Eurasia Publishing House, 1968
Buku Teks
Lawrence L. Bethel ... [et al.]
McGraw-Hill, 1954
Buku Teks
Mund, Vernon A., author
Appleton-Century-Crofts, 1971
Buku Teks
Lundgren, Earl F., author
Confield, 1974
Buku Teks