Diversifications Poems Author:A. R. Ammons Diversifications is the 1975 collection of shorter poems by the poet whose Collected Poems won the National Book Award for 1973 and whose long poem Sphere won the Bollingen prize in Poetry (1973-4) and was nominated for the National Book Award for 1975. The poems are on a diversity of subjects, but through them all runs the strong unity of visio... more »n that has led critic Geoffrey Hartman to acclaim Ammons as "a major American Poet."« less