Luisa Valenzuela
El gato eficaz.
Mexico City: Joaquin Mortiz, 1972. Nueva narrativa hispánica. First edition. 119 pages.
Softcover volume, measuring approximately 5.25" x 8", shows light shelfwear. Binding is sound. Lightly age-toned pages are clean and without markings. Book is preserved in transparent plastic cover, with tear along front fore edge. 
Second novel by Argentine post-'Boom' novelist and short story writer Luisa Valenzuela (b. 1938).