Columbia subject headings:
Harvard subject headings:
Evolution
Fishes--Classification
Fishes--Evolution
Fishes--Morphology
Morphology--Mathematics.
Morphology--Statistical methods.
Numerical taxonomy
Princeton subject headings:
Evolution.
Fishes--Classification.
Fishes--Evolution.
Fishes--Morphology.
Morphology--Mathematics.
Morphology--Statistical methods.
Numerical taxonomy.