00403nam a2200109Ia 4500008004100000020001400041040004400055100002100099245007800120260005600198300003900254180412s9999||||xx |||||||||||||| ||und||  a801814952  aAhmadu Bello University Library - Zaria  aMacksey, Richard 0aVelocities of change: critical essays from MLNcedited by Richard Macksey  aBaltimorebThe Johns Hopkins University Pressc1974  axxvii, 370p.: ill., diagr., table.