Cover is a composite creation, with the "Lois Lane's Face" panel presumably from the splash page of "The Mermaid from Atlantis" from Superman (DC, 1939 series) #138 with art by Wayne Boring and Stan Kaye and the other two panels from the covers of Superman Family, The (DC, 1974 series) #167 ("Lois Lane Fugitive Mermaid") and #165 ("Lois Lane's Jungle Jeopardy"), both Superman Family covers with art by Nick Cardy. Thanks to Kieth Chandler and Ted Watson for the information via the GCD Errors list, January 2010.
This is the version of the story that appeared in The Superman Family #167 (October-November 1974).
This is the version of the story that appeared in Superman Family #168 (December 1974-January 1975).
This is the version that appeared in Superman #278 (August 1974).
This was the version that appeared in Superman Family #165 (June-July 1974)