Many thanks for your replies.
I paid a visit to the Collector's office and the Sub-Registrar's office. I was able to make an application for the property card and was told that I will be receiving the same in 10 days.
As far as the agreement is concerned, I have learnt from my other society members that none of the agreements were registered at that time. I learnt from the sub-registrars office the unregistered agreements cannot be retrieved. In this case, what possible course of action to be adopted to substitute the agreement copy?
Also, I found out from the collector's office that the conveyance for my society has been done, but the conveyance deed is not available with my society. Is there a way to retrieve this document without availability of any details such as the year of conveyance, etc.?