Seminar on Primary and Work-Oriented Education Delhi, National Council of Educational Research and Training (India), & Singh, R. P. (1970). Seminar on Primary and Work-Oriented Education: A collection of papers to be discussed at the seminar. National Council of Educational Research and Training.

Seminar on Primary and Work-Oriented Education Delhi, National Council of Educational Research and Training (India), and Rajendra Pal Singh. Seminar on Primary and Work-Oriented Education: A Collection of Papers to Be Discussed at the Seminar. New Delhi]: National Council of Educational Research and Training, 1970.

Seminar on Primary and Work-Oriented Education Delhi, et al. Seminar on Primary and Work-Oriented Education: A Collection of Papers to Be Discussed at the Seminar. National Council of Educational Research and Training, 1970.