ADVANCED

Dickerson, _The Frog Book_. Doubleday, Page and Company.

Holmes, _The Biology of the Frog_. The Macmillan Company.

Jordan, _Fishes_. Henry Holt and Company.

Morgan, _The Development of the Frog's Egg_. The Macmillan

Company.

Needham, _General Biology_. Comstock Publishing Company.

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