'In 1846 Joseph Leidy discovered that the worm Trichina is found in this animal'
the pig
SCIENTIFIC DISCOVERY: In 1846 Joseph Leidy discovered that the worm Trichina is found in this animal
In 1846 Joseph Leidy discovered that the worm Trichina is found in this animal
In 1846 Joseph Leidy discovered that the worm Trichina is found in this animal
SCIENTIFIC DISCOVERY
the pig
SCIENTIFIC DISCOVERY