GEN: "trade" vs. "non-trade"

["mohs_st_jl@noeca.ohio.gov" <mohs_st_jl@noeca.ohio.gov>]

What is the difference between "trade" and "non-trade" publications?
I know I learned this at one time, but obviously too long ago!

Thanks!
Jan LaBonte, Librarian
Monroeville High School
Monroeville, OH 44847
mohs_st_jl@noeca.ohio.gov

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