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Publisher
- John Wiley & Sons10
- Johns Hopkins University. Press1
- Joint Centre for Bioethics1
- Josiah Macy, Jr. Foundation1
- King, Llewellyn1
- Laban Guild1
- Leaders Magazine1
- Librairie Maloine1
- Lippincott-Raven Publishers3
- Long Island Biological Association (N.Y.)1
- Long Islander Newspapers1
- Los Angeles Herald-Examiner2
- M.I.T. Press4
- MacMillan Magazines10
- Manchester Guardian Weekly1
- Marine Biological Laboratory (Woods Hole, Mass.)1
- Massachusetts Medical Society2
- Mathematical Association of America1
- McCollum-Pratt Institute1
- McGraw-Hill Companies9