APA
Sangal P.P, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics & University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. (1969). Air efence systems and coverage problems. : .
Chicago
Sangal P.P, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics and University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. 1969. Air efence systems and coverage problems. : .
Harvard
Sangal P.P, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics and University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. (1969). Air efence systems and coverage problems. : .
MLA
Sangal P.P, University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics and University of Delhi. Faculty of Mathematical Sciences. Department of Mathematics. Air efence systems and coverage problems. : . 1969.
