19 1 50 Herbert Schildt Additional Author mixed material McGraw Hill 1987 Carry Nyhoff Additional Author Sanford Leestma Additional Author mixed material Macmillan 1989 Yoyok Adisetio Laksono Additional Author mixed material Andi Offset 1992 William J Collins Additional Author mixed material McGraw Hill 1986 William J Collins Additional Author mixed material McGraw Hill 1986 Ted G. Lewis Additional Author Abbas Birjandi Additional Author mixed material Wadworth 1986 Irvine H Forlener Additional Author mixed material Broks Cole Pub 1985 James F. Peters Additional Author mixed material Holt Rinehart and Wiston 1986 Ali Behforooz Additional Author Martin O Hololin Additional Author mixed material Brooks/Cole 1986 Kolman W. Brand Additional Author mixed material Kent Pub. 1986 Hugo T D Alarco Additional Author Robert F Sutherland Additional Author mixed material Macmillan Pub. 1988 Charles W. Reynold Additional Author mixed material Wadsworth 1986 Lawrence J.Mazlack Additional Author mixed material Hort Rinehart and winston 1983 Paul A Sand Additional Author mixed material McGraw Hill 1985 Larry Joel Goldstein Additional Author mixed material Winston 1988 John S. Mallozzi Additional Author mixed material McGraw Hill 1988 Bary B. Shelley Additional Author Thomas J. Cashman Additional Author mixed material Boryd & Fraser 1983 Jogiyanto H M Additional Author mixed material Andi Offset 1989 Jogiyanto H M Additional Author mixed material Andi Offset 1989