The Mexican cinema of darkness : a critical study of six landmark horror and exploitation films, 1969-1988 / Doyle Greene.

"Following social upheaval and tragedy in 1968, Mexican horror cinema shifted away from masked wrester flicks and toward darker, more explicit films, which can be called "avant-exploitation." This work covers six of those films, from 1968's El Topo to 1988's Santa Sangre"--Provided by publisher.