Stuck on loads.
1a Spoil many in publication (6) - - - - - r
5a. Indifference in a way shown by last in relay (6) - - a - - -
9a. State of girl, our one (8)m - - - o - - -
10a. Boy accepts correct to clear up (8)
- - - - - t - -
12a. Strong, almost entirely a clay block structure (6) - - - - - c
I think 20a. might be children.(don't know why) Doctor in country, the last to shun issue (8)
-h - - - r - -
5d. Be fast with dinners cooked, those toasted. (6,7)- - - - - - f - i - - - s
7d. Animal runs into pipe (5) - - - - e
13d. About to beat with disgust (7)
- - p - - - -
All help appreciated.