ckuzai lujvo

z1 is a bookshop selling books z2=c1, operated by z3.

Cf. ckusro.

In notes:

ckusro
s1 is a library of books c1=s2.
ckuzdacre
c1 is a librarian by standard c3.
ckuzdaske
s1 is library science with methodology s3.