Help appreciated with the parsing for these....
13a Ask to purchase book from list (5) - ORDER (Ask)
Where does 'Book' fit in?
30a Fabric samples which are for use in bathroom (10) - TOILETRIES (For use in bathroom)
54a Note commission is being cut back (5) - BREVE (Note)
12d Ingenious beam supported at one against failing (6) - CLEVER? (Ingenious)
PS. For 12d the number of letters is given as 5, but it's 6.