This issue has variants.
Underground Comix are known for using different prices, covers (art or color variations) and/or interior content to distinguish different printings.
1st print November 1972 has 0.50 USD cover price. 2nd print has 0.75 USD cover price. 3rd print has 1.00 USD cover price.
Inside front cover illustration with indicia information at bottom of page.
Inside of back cover.