Ovine detailed by Eliot in parts of book (6)
I believe the answer is:
sheets
'parts of book' is the definition.
(pages)
'ovine detailed by eliot' is the wordplay.
'ovine' becomes 'sheep'.
'detailed' means to remove the last letter (the word must be end-less or 'de-tailed').
'by' means one lot of letters go next to another.
'eliot' becomes 'ts' (TS Eliot).
'sheep' with its last letter taken off is 'shee'.
'shee'+'ts'='SHEETS'
'in' is the link.
(Other definitions for sheets that I've seen before include "Bed covers" , "Pieces of paper or bedclothes" , "They get blanket coverage" , "Bedclothes to be found on ships?" , "Flat pieces, of cloth or paper say" .)