This hardcover edition has an extra story, "Tonight Satan Claims His Naked Bride" by Ted McDonald, Man's Story, August 1974, not in the paperback.

From the publisher:

ATOMIC WEREWOLVES AND MAN-EATING PLANTS is the latest book in in Men's Adventure Library series. It's a unique, lushly illustrated collection of vintage men's adventure magazine stories featuring monsters, ghosts, aliens, robots, a legendary Key West weirdo, and more, written by "weird tales" luminaries such as H.P. Lovecraft, Manly Wade Wellman, Theodore Sturgeon, and Gardner Fox. Featured artists include FAMOUS MONSTERS magazine legend Basil Gogos, EC/MAD magazine artist Jack Davis, and many other great artists who did cover and interior artwork for MAMS. The cover of the men's adventure magazine each story appeared in is reproduced in full color, along with the original interior illustrations. Background on the stories, writers and artists is provided in commentary by well-known horror expert Stefan Dziemianowicz, PulpFest Convention organizer and pulp mag expert Mike Chomko, and Men's Adventure Library co-editors Wyatt Doyle and Bob Deis. The book is also available in a paperback edition in a separate listing here and on Amazon worldwide.

Here's the Contents:

INTRODUCTION AND COMMENTARY

• "A Century of Weird Tales" by Mike Chomko
• "Weasels Ripped Their Flesh!" by Stefan Dziemianowicz
• "A Turn for the Weird" by Wyatt Doyle & Robert Deis

STORIES

• "The Flag of the Stonewall Brigade" by Ronald Adamson, Action, March 1953
• "When the Vampire Was Captured" by Ward Semple, True Weird, March 1953
• "Vampires Ripped My Flesh" by Lewis Greer, Man's Life, March 1956
• "Island of Doom" by Bill Wharton, Sport Trails, Spring 1957
• "Trapped by a Man-Eating Tree" by Robert Moore, Man's Life, March 1958
• "Song of the Slaves" by Manly Wade Wellman, Cavalier, April 1959
• "The Rats in the Walls" by HP Lovecraft, Sensation, January 1959
• "The Man Who Couldn't Die" by Gardner F. Fox, Adventure, August 1961
• "The Hunted" by Rick Rubin, Adventure, October 1961
• "Mad Doctor of No-Name Key" by Peter Eldridge, Adventure Life, Dec. 1961
• "Her Body Belonged to the Devil" by George Venner, Man's Look, Dec. 1961
• "Their Bodies Glowed With Fire" by Dane Marshall, Peril, Dec. 1961
• "The Blonde With the Mysterious Body" by Theodore Sturgeon, Men, April 1962
• "Fowl Play" by William Bayne, Escape to Adventure, May 1962
• "Strange Cult of the Vampire Tarantulas" by Rick Manners, Peril, Sept. 1962
• "Soft Nudes for Doktor Horror" by Martin Bowers, Man's Story, Sept. 1964
• "Stone Age Lust--Today" by Goeffrey Costain, Man's Daring, July 1965
• "Killer of the Cave" by Gene Preen, Adventure, April 1966
• [and in the hardcover only] "Tonight Satan Claims His Naked Bride" by Ted McDonald, Man's Story, August 1974