Mla Bibliography Search, Writing Reports For Students - Imgur
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free database - Mathematics
Mathematics and Computer Science
Medicine & Health Sciences - FirstSearch
Medicine & Health Sciences - ISI Web of Knowledge
Language & Literature (ProQuest) (MLA Directory of Periodicals is available from the MLA Bibliography search page)
There is a useful feature in the MLA Bibliography search, where you can search by "Periodical Subject." If you search for "postcolonial," 34 journals show up, and I've been exploring them. (I don't know why I never tried this before; one of my colleagues showed me how). On the individual entries for the journals, MLA actually gives very specific information as to how long articles should be, what the turn-around rate is, and what the submission/acceptance ratio is.