00437nam a2200181Ia 4500008004100000041001200041082000800053082001100061100001800072100001100090245005000101260001500151260002400166260000900190300001500199365002500214650001600239150909s9999 xx 000 0 und d aEnglish a620 bOST/DE aOstrofsky B  eAuthor aDesign, Planning, and development methodology aNew Jersey bPrentice - Hall Inc c1977 a401 Pages aUSD 18.95  aEngineering