About KICA, they've used both KICANUMBER, KICA NUMBER and KICA-NUMBER, seemingly at random. As Ira said, LC seems to always be listed without any separator, but I don't know if it can be considered enough of a conscious choice on their part for us to go with it. I for one always liked the idea of basically going strictly with STEM-NUMBER(~NUMBER) since it makes things sort nicely and look neat.
And I think it's always better to go with what's on the spine than on the obi since it tends to be on two lines there.
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