DELANO: THE STORY OF THE CALIFORNIA GRAPE STRIKE by John Gregory Dunne. 176 pages. Farrar, Straus & Giroux. $4.95.
California containsalong with hippies, think tanks and computerized leisurea number of anachronisms. From the fall of 1965 until late last year, the vast and verdant San Joaquin Valley was the scene of a farm workers' strike that, in its stark simplicity, seemed to re-trample Steinbeck's Grapes of Wrath. At issue were no such modern matters as automation and a guaranteed annual wage but merely the right of California's 500,000 fieldworkers, predominantly Mexican-Americans, to unionize....