kitesandtrainsandcats wrote:
autisticelders wrote:
some libraries automatically discard books published before a certain date.
Libraries also withdraw books which have circulation rates below a certain frequency, that is another possibility.
that is worth looking into, but the person who informed me used to word "discarded", and it is an expensive book from a Canadian Professor. - Plus this branch host book sales consistently.
another issue with that low frequency in this case is somebody did sign it out 3 months max before it was removed, that should have saved it from getting tossed for non use.
All of the other possible explanations have interesting issues too, so this is valid input, thanks.