TY  - BOOK
AU  - Tripathi Satya Prakash
AU  -  Tej Bahadur Singh Gu.
AU  - University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics
ED  - University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics
TI  - Cohomology algebra of orbit spaces under free actions and hopficity of the ploynomial rings
PY  - 1999///
KW  - MATHEMATICS
ER  -