"Natural History Lectures." . . . "An introduction to the study of natural history, in a series of lectures delivered in the hall of the College of Physicians and Surgeons, New York"@en . . "Prof. Agassiz's lectures, the animal kingdom" . "Prof. Agassiz's lectures, the animal kingdom"@en . . . "An introduction to the study of natural history in a series of lectures delivered in the hall of the College of Physicians and Surgeons, New York ; also, a biographical notice of the author"@en . "An introduction to the study of natural history, in a series of lectures delivered in the hall of the College of physicians and surgeons, New York. Also, a biographical notice of the author"@en . . . . . . . . "An introduction to the study of natural history in a series of lectures delivered in the hall of the College of physicians and surgeons, New York"@en . "An introduction to the study of natural history in a series of lectures delivered in the hall of the College of Physicians and Surgeons, New York"@en . . . . . "An introduction to the study of natural history : in a series of lectures delivered in the hall of the College of Physicians and Surgeons, New York" . . . "Animal Population Groups Lectures." . . . .