Columbia subject headings:
Harvard subject headings:
Early printed books--16th century
Portugal--Bio-bibliography.
Science--Early works to 1800--Bibliography.
Science--Early works to 1800--Bio-bibliography.
Scientific literature--Portugal--Bio-bibliography.
Scientific literature--Spain--Bio-bibliography.
Spain--Bio-bibliography
Princeton subject headings:
Portugal--Bio-bibliography.
Science--Bibliography.
Science--Bio-bibliography.
Spain--Bio-bibliography.