The Open University., Technology : A Second Level Course
The British railways system / The Open University. Technology : a Second Level Course ; prepared by Roger Spear
The British railways system / The Open University. Technology : a Second Level Course ; prepared by Roger Spear
. - 2nd ed
. - Walton Hall : The Open University Press, 1975
. - 71 p. : il. 30 cm
. - (Systems management . T242; 2)
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