Agreements to study geographical regions (9)

I believe the answer is:

contracts

'agreements' is the definition.
(contract is a kind of agreement)

'study geographical regions' is the wordplay.
'study' becomes 'con' (I've seen this before).
'geographical regions' becomes 'tracts' (tract is a kind of geographical region**).
'con'+'tracts'='CONTRACTS'

'to' acts as a link.

(Another definition for contracts that I've seen is " Legal agreements".)

I've seen this clue in The Telegraph.

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