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1
Structured systems analysis : tools & techniques / Chris Gane, Trish Sarson.
New York : Improved System Technologies, 1977
xii, 373 p. : ill. ; 28 cm.



2
Structured systems analysis : tools and techniques / Chris Gane and Trish Sarson.
Englewood Cliffs, N.J. : Prentice-Hall, 1979
xii, 241 p. : ill. ; 29 cm.