Changes

Magazines and newspapers are commonly viewed as the most typical type of periodical (although technically newspapers are not classified as periodicals in [[library science]]). Other serials, periodicals and journals produced by scientific, artistic, academic or special interest publishers are often subscription-only, costly, narrowly limited in circulation, and have little or no advertising. Also see academic publishing and scientific journals.[http://en.wikipedia.org/wiki/Category:Serials%2C_periodicals_and_journals]

Magazines and newspapers are commonly viewed as the most typical type of periodical (although technically newspapers are not classified as periodicals in [[library science]]). Other serials, periodicals and journals produced by scientific, artistic, academic or special interest publishers are often subscription-only, costly, narrowly limited in circulation, and have little or no advertising. Also see academic publishing and scientific journals.[http://en.wikipedia.org/wiki/Category:Serials%2C_periodicals_and_journals]