This issue has variants.
Indexed from a 21st printing copy, circa 1981. 1.95 USD cover price.
Other known printings:
16th printing, circa April 1979. 1.25 USD cover price.
17th printing, circa May 1979. 1.25 USD cover price.
Unknown printing, circa 1980. 1.50 USD cover price.
Copyright 1970 by The Register & Tribune Syndicate, Inc. Copyright 1973 by CBS Publications, the Consumer Publishing Division of CBS Inc. No actual publication date listed. Date a guess based on series number and printing. Humor genre listed on book.