TY - JOUR A1 - Dwivedi, C. B. A1 - Singh, I. L. A1 - Singh, N. B. T1 - Effects of Contextual Inputs on Vigilance JF - Psychologia. An International Journal of Psychology in the Orient, Osaka, Vol. XXIII (No. 2, 1980), pp. 116-119. Y1 - 1980 ER -