no place: no publisher, no date. 24p., text neatly keyboard-set without justified right margin, staplebound 8.5x5.5 inch apricot wraps with several well laid-out photoillustrations, on the back cover there is a credit for front cover picture (to Prensa Latina). Some handling and dust-soil, good copy.
Che's letter to Carlos Quijano originally (1965) titled "El Socialismo y el Hombre en Cuba." This reprint very likely from somewhere in Central or South America.