Columbia subject headings:
Escher, M. C. (Maurits Cornelis), 1898-1972.
Printmakers--Netherlands--Biography.
Harvard subject headings:
Escher, M. C. (Maurits Cornelis), 1898-1972--Catalogs.
Escher, M. C. (Maurits Cornelis), 1898-1972.
Printmakers--Netherlands--Biography.
Princeton subject headings:
Escher, M. C. (Maurits Cornelis), 1898-1972.
Printmakers--Netherlands--Biography.