TY  - SER
ED  - Academy of Natural Sciences of Philadelphia.
TI  - Proceedings of the Academy of Natural Sciences of Philadelphia
SN  - 0097-3157
PY  - 1841///-
CY  - Philadelphia
PB  - Academy of Natural Sciences of Philadelphia
N1  - Vols. for 1857-1900 are unnumbered; In lists on covers the vols. are arranged in series: 1st ser. 1841/43-1856 (8 v.); 2d ser. 1857-70 (14 v.); 3d ser. 1871-<1922 (52 v.)>; Posseduto dal 1883-157 (2008)
ER  -