La Creature du Marais Album No. 2 (1983)
This non-US edition collects the Saga of the Swamp Thing #5, 6 and 7. The publisher compiled the three issues together without cover pages or a clear indication as to where one issue ends and others begin. Of course, if you’ve read these issues before it is clear where the transitions occur. Still, it is a little confusing.

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The Saga of the Swamp Thing #5
Screams of Hungry Flesh

I love the guy holding the straight jacket with the hope to simply corral Swamp Thing into submission.

The Saga of the Swamp Thing #6
Sins of the Water

With an odd choice to omit certain panels, the book transitions into
Swamp Thing #7
I have Seen the Splintered Timbers of a Hundred Shattered Hulls

The book features a Phantom Stranger short as well, much like the early Saga of the Swamp Thing issues.
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The book also features some great House of Mystery stories.
Below are some of my favorites.
The Calendar Man! from House of Mystery #266 (1979)

The Perfect Host from House of Mystery #265 (1979)

Illegal Procedure from House of Mystery #265 (1979)
Written by Michael Uslan who went on to produce Batman and Swamp Thing (film and tv)