KHANNA M., . (1990). Solid Geometry. : Jai Prakash Nath & Co. Mearut.
KHANNA ML, . 1990. Solid Geometry. : Jai Prakash Nath & Co. Mearut.
KHANNA ML, . Solid Geometry. : Jai Prakash Nath & Co. Mearut. 1990.