TY  - SER
ED  - Academy of the Natural Sciences of Philadelphia
TI  - Proceedings of the Academy of Natural Sciences of Philadelphia
SN  - 0097-3157
PY  - 1848///-
CY  - Philadelphia
PB  - Academy of Natural Sciences
KW  - Natural history
KW  - Periodicals
N1  - Some publications have special vols
ER  -