(1969). 0. University College of Engineering, 13(0), -.
. "0", University College of Engineering, 13, 0, 1969, -.
(1969). '0', University College of Engineering, 13(0), pp. -.
, "0," University College of Engineering, 13 0 (1969): -,
0. University College of Engineering, 1969; 13(0): -.
)