Vol 3 of G. N. Pant's "Indian Arms and Armour" covers armour and shields. There is also Pant's stand-alone book on shields:
https://books.google.com.au/books?id=OaXQAAAAMAAJ
Other than that, Robinson's "Oriental armour" discusses them in his chapter on India:
https://books.google.com.au/books?id...AQBAJ&pg=PT178
As for polearms, there is some in Elgood's "Hindu arms and ritual":
http://press.uchicago.edu/ucp/books/...bo3705137.html
Otherwise, Stone and Egerton.
While not Indian, the section on shields in Khorasani's book on Persian arms is relevant:
http://www.moshtaghkhorasani.com/bio...mor-from-iran/