Columbia subject headings:
Harvard subject headings:
Biogeography--Spain--Pityusic Islands.
Ecology--Spain--Pityusic Islands.
Natural history--Spain--Pityusic Islands.
Pityusic Islands (Spain)
Princeton subject headings:
Biogeography--Spain--Pityusic Islands.
Ecology--Spain--Pityusic Islands.
Natural history--Spain--Pityusic Islands.
Pityusic Islands (Spain)