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Appearing every two years and keeping its material current by monthly supplements, this book is a listing of most of the pharmaceuticals available in the American market. Of the products available nationally—or at least over a large section of the country—it quite likely lists virtually all of them.
There is another book, Physicians Desk Reference (PDR) with which it may be compared. In the Modern Drug Encyclopedia (MDE) the listings are free to the pharmaceutical manufacturer, and he supplies the text according to a given pattern; in the PDR, the listings are paid for by the manufacturer on the basis of space used. Therefore the MDE is sold by its publisher —as any other published book—while the PDR is sent free to physicians, the cost of which is covered by the pharmaceutical manufacturer who pays for the listing.
It could well be assumed that the listing in the MDE