This is Giant Superman 9, published by Mimosa (SA Magazine Co) +/- 1963-1964.
It reprints the cover and all three stories from DC Comics' Adventure Comics 274 (1960):
"The Monster that stalked Smallville!"
Congo Bill: "The Revenge of the River Demon"
Also reprinted is this story from DC Comics' Action Comics 220 (1956):
"The Interplanetary Olympics"
Also reprinted is this story from DC Comics' Superman's Pal Jimmy Olsen 28 (1958):
Jimmy Olsen: "The Spendthrift and The Miser"
48pages, glossy colour cover, black and white newsprint interior.
Here is the cover of issue 9 and DC Comics' original cover: