IAGRG Conference North Bengal University, Mukherjee, S. e., Prasanna, A. R. e., & Kembhavi, A. K. e. (1992). Gravitation and cosmology: Proceedings of the XV IAGRG Conference held at the North Bengal University, November 4-7, 1989. Wiley Eastern.

IAGRG Conference North Bengal University, S. ed Mukherjee, A. R. ed Prasanna, a A. K. ed Kembhavi. Gravitation and Cosmology: Proceedings of the XV IAGRG Conference Held at the North Bengal University, November 4-7, 1989. New Delhi: Wiley Eastern, 1992.

IAGRG Conference North Bengal University, et al. Gravitation and Cosmology: Proceedings of the XV IAGRG Conference Held at the North Bengal University, November 4-7, 1989. Wiley Eastern, 1992.