Gray's Botanical text-book.

2

Letters of Asa Gray, edited by Jane Loring Gray ... .

2

Gray's Botanical text-book.

1

Letters of Asa Gray, edited by Jane Loring Gray ... .

1

The British Tunicata; an unfinished monograph, by the late Joshua Alder and the late Albany Hancock. Edited by John Hopkinson, with a history of the work by the Rev. A. M. Norman.

1

Monographies d'échinodermes, vivans et fossiles / par Louis Agassiz.

Liv. 1-3

The British Tunicata; an unfinished monograph, by the late Joshua Alder and the late Albany Hancock. Edited by John Hopkinson, with a history of the work by the Rev. A. M. Norman.

2

The British Tunicata; an unfinished monograph, by the late Joshua Alder and the late Albany Hancock. Edited by John Hopkinson, with a history of the work by the Rev. A. M. Norman.

3