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Books by H D. b. 1839 Walker

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The gape worm of fowls (Syngamus trachealis); the earthworm (Lumbricus terrestris), its intermediate host. Also, On the prevention of the disease in ... the gapes, which is caused by this parasite
🇺🇸 United States
The gape worm of fowls (Syngamus trachealis); the earthworm…
By: H D. b. 1839 Walker
View Details
The gape worm of fowls (Syngamus trachealis); the earthworm (Lumbricus terrestris), its intermediate host. Also, On the prevention of the disease in ... the gapes, which is caused by this parasite
🇺🇸 United States
The gape worm of fowls (Syngamus trachealis); the earthworm…
By: H D. b. 1839 Walker
View Details