Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 29
Academy of Natural Sciences of Philadelphia
Journal of the Academy of Natural Sciences of Philadelphia
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 21
Catalog of the types of neontological mo
Catalog of the types of neontological mollusca of the Academy of Natural Sciences of Philadelphia
Proceedings
Act of incorporation and by-laws of the Academy of Natural Sciences of Philadelphia
By-laws of the Academy of Natural Scienc
By-laws of the Academy of Natural Sciences of Philadelphia
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 71
Zoogeography in the Caribbean
Catalogue of the oological collection in the Academy of Natural Sciences of Philadelphia
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 3
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 30
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 31
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 33
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 34
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 35
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 36
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 37
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 38
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 39
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 41
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 42
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 44
Proceedings of the Academy of Natural Sciences of Philadelphia, Volume 45
