Columbia subject headings:
Harvard subject headings:
Needham, Dorothy M. (Dorothy Mary), 1896-1987--Journeys.
Needham, Joseph, 1900-1995--Journeys.
Science--China--Miscellanea.
Technology--China--Miscellanea.
Princeton subject headings:
Needham, Dorothy M. (Dorothy Noyle), 1896---Travel.
Needham, Joseph, 1900---Travel.
Science--China--Miscellanea.
Technology--China--Miscellanea.
Trivia and miscellanea.