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Language: en
Pages: 1096
Pages: 1096
Type: BOOK - Published: 1867 - Publisher:
"Publications of the Academy of Natural Sciences of Philadelphia": v. 53, 1901, p. 788-794.
Language: en
Pages: 884
Pages: 884
Type: BOOK - Published: 1870 - Publisher:
Language: en
Pages: 90
Pages: 90
Type: BOOK - Published: - Publisher: Academy of Natural Sciences
Language: en
Pages: 1550
Pages: 1550
Type: BOOK - Published: - Publisher:
First multi-year cumulation covers six years: 1965-70.
Language: en
Pages: 884
Pages: 884
Type: BOOK - Published: 1870 - Publisher: