Columbia subject headings:
Authors, Greek--20th century--Biography.
Ritsos, Giannēs, 1909-1990.
Harvard subject headings:
Poets, Greek (Modern)--20th century--Biography.
Ritsos, Giannēs, 1909-1990
Princeton subject headings:
Poets, Greek (Modern)--20th century--Biography.
Ritsos, Giannēs, 1909-1990--Anniversaries.
Ritsos, Giannēs, 1909-1990.