A BIOGRAPHICAL NOTICE OF GEORGE W. TRYON, JR., CONSERVATOR OF THE CONCHOLOGICAL SECTION OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA

A BRIEF HISTORY OF AN EXISTING CONTROVERSY ON THE SUBJECT OF ASSIMILATED RANK IN THE NAVY OF THE UNITED STATES

A NOTICE OF THE ORIGIN, PROGRESS AND PRESENT CONDITION OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA

A NOTICE OF THE ORIGIN, PROGRESS, AND PRESENT CONDITION OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA

A NOTICE OF THE ORIGIN, PROGRESS, AND PRESENT CONDITION OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA

A NOTICE OF THE ORIGIN, PROGRESS, AND PROGRESS CONDITION

A SKETCH OF THE LIFE OF CASPAR WISTER, M (PB)

A VOYAGE ROUND THE WORLD

A VOYAGE ROUND THE WORLD

A VOYAGE ROUND THE WORLD (PB)

AN ACCOUNT OF THE INSTITUTION AND PROGRE (PB)

ANNALES DES SCIENCES NATURELLES, 1849, VOL. 12 (PB)

ANNALES DES SCIENCES NATURELLES, 1854: COMPRENANT LA ZOOLOGIE, LA BOTANIQUE, L''ANATOMIE ET LA PHYSIOLOGIE COMPARÏ¿½E DES DEUX RÏ¿½GNES ET L''HISTOIRE DES C (PB)

ANNALES DES SCIENCES NATURELLES, COMPRENANT LA ZOOLOGIE, LA BOTANIQUE, L'ANATOMIE ET LA PHYSIOLOGIE COMPAREE DES DEUX REGNES ET L'HISTOIRE DES CORPS ORGANISES FOSSILES, VOL. 13 (CLASSIC REPRINT)

ATLAS METHODIQUE DES CAHIERS D'HISTOIRE NATURELLE

CAHIERS D'HISTOIRE NATURELLE

CAHIERS D'HISTOIRE NATURELLE A L'USAGE DES COLLEGES ET DES ECOLES NORMALES PRIMAIRES, VOLUMES 4-7...

CAHIERS D'HISTOIRE NATURELLE, A L'USAGE DES COLLEGES ET DES ECOLES NORMALES PRIMAIRES

COURS ELEMENTAIRE D'HISTORIE NATURELLE, VOLUME 1

COURS ELEMENTAIRE D'HISTORIE NATURELLE, VOLUME 1...

CUADERNOS DE HISTORIA NATURAL...

ELEMENTOS DE HISTORIA NATURAL

ELEMENTOS DE ZOOLOGIA O HISTORIA NATURAL DE LOS ANIMALES

ELEMENTOS DE ZOOLOGIA O HISTORIA NATURAL DE LOS ANIMALES - PRIMARY SOURCE EDITION

ELEMENTOS DE ZOOLOGIA O HISTORIA NATURAL DE LOS ANIMALES...

ELEMENTS OF BOTANY

ELEMENTS OF CONCHOLOGY (PB)

ELEMENTS OF CONCHOLOGY / PREPARED FOR THE USE OF SCHOOLS AND COLLEGES

ELEMENTS OF CONGHOLOGY

ELEMENTS OF CONGHOLOGY (HB)

ELEMENTS OF ENTOMOLOGY

ELEMENTS OF ENTOMOLOGY

ELEMENTS OF ENTOMOLOGY : PREPARED FOR TH (HB)

ELEMENTS OF GEOLOGY

ELEMENTS OF GEOLOGY

ELEMENTS OF HERPETOLOGY AND OF ICHTYOLOGY

ELEMENTS OF HERPETOLOGY AND OF ICHTYOLOGY (HB)

ELEMENTS OF HERPETOLOGY, AND OF ICHTHYOLOGY

ELEMENTS OF HERPETOLOGY, AND OF ICHTHYOLOGY (HB)

ELEMENTS OF HERPETOLOGY, AND OF ICHTHYOLOGY (PB)

ELEMENTS OF MAMMALOGY

ELEMENTS OF NATURAL HISTORY

ELEMENTS OF ORNITHOLOGY

ELEMENTS OF ORNITHOLOGY

ELEMENTS OF ORNITHOLOGY (PB)

ELEMENTS OF ORNITHOLOGY. PREPARED FOR THE USE OF SCHOOLS AND COLLEGES

ELEMENTS OF ORNITHOLOGY. PREPARED FOR THE USE OF SCHOOLS AND COLLEGES

ELEMENTS OF ORNITHOLOGY. PREPARED FOR THE USE OF SCHOOLS AND COLLEGES (HB)

ELEMENTS OF ORNITHOLOGY. PREPARED FOR THE USE OF SCHOOLS AND COLLEGES (HB)

ELEMENTS OF ORNITHOLOGY. PREPARED FOR THE USE OF SCHOOLS AND COLLEGES - SCHOLAR'S CHOICE EDITION

MANUEL DE MATIERE MEDICALE, OU DESCRIPTION ABREGEE DES MEDICAMENTS, ......

MOLLUSCA (PB)

MUSEE D'HISTOIRE NATURELLE

NAVAL

ORGANISATION ET PHYSIOLOGIE DE L'HOMME EXPLIQUEES A L'AIDE DE FIGURES COLORIEES

ORGANISATION ET PHYSIOLOGIE DE L'HOMME, EXPLIQUEES A L'AIDE DE FIGURES COLORIEES, DECOUPEES ET SUPERPOSEES, VOLUME 1...

ORGANISATION ET PHYSIOLOGIE DE L'HOMME......

ORNITHOLOGY

PLANCHES MURALES D'HISTOIRE NATURELLE. ZOOLOGIE, BOTANIQUE, GEOLOGIE. LEGENDES. 2E EDITION PUBLIEE

REPTILES AND FISHES ...

SKETCH OF THE LIFE OF JOSEPH LEIDY, M.D., LL. D (CLASSIC REPRINT)

STRUCTURE ET PHYSIOLOGIE ANIMALES

STRUCTURE ET PHYSIOLOGIE ANIMALES......

STRUCTURE ET PHYSIOLOGIE DE L'HOMME ......

STRUCTURE ET PHYSIOLOGIE DE L'HOMME, D MONTR ES L'AIDE DE FIGURES COLORI ES, DECOUP ES ET SUPERPOS ES...

THE NAVY

THE NAVY. HINTS ON THE REORGANIZATION OF THE NAVY