Columbia subject headings:
Embryology--History.
Embryology--Philosophy.
Malpighi, Marcello, 1628-1694.
Spallanzani, Lazzaro, 1729-1799.
Harvard subject headings:
Embryology--History.
Embryology--Philosophy.
Malpighi, Marcello, 1628-1694.
Spallanzani, Lazzaro, 1729-1799.
Princeton subject headings:
Embryology--History.
Embryology--Philosophy.
Malpighi, Marcello, 1628-1694.
Spallanzani, Lazarro, 1729-1799.