Retailer keeping wise man in recently issued books (9)
I believe the answer is:
newsagent
'retailer' is the definition.
(I've seen this before)
'wise man in recently issued books' is the wordplay.
'wise man' becomes 'sage' (sage is a kind of wise man).
'in' means one lot of letters goes inside another.
'recently' becomes 'new' (synonyms).
'issued books' becomes 'nt' (I can't justify this - if you can you should give a lot more credence to this answer).
'new'+'nt'='newnt'
'sage' put within 'newnt' is 'NEWSAGENT'.
'keeping' acts as a link.
Can you help me to learn more?
(Other definitions for newsagent that I've seen before include "paper supplier" , "Guardian seller?" , "Shopkeeper selling magazines" , "daily shop" , "Retailer" .)