Study Thatcher’s material for auditors (4)

I believe the answer is:
read
'study' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for read that I've seen before include "Study (subject at university)" , "Con" , "examined" , "Absorbed (written text)" , "Measure energy or fuel consumption" .)
