Proceedings of the Academy of Natural Sciences of Philadelphia.

v.5 (1850-1851)

The Annual of scientific discovery: or, Year-book of facts in science and art.

1853

The Annual of scientific discovery: or, Year-book of facts in science and art.

1868

The Annual of scientific discovery: or, Year-book of facts in science and art.

1871

The Annual of scientific discovery: or, Year-book of facts in science and art.

1852

The Annual of scientific discovery: or, Year-book of facts in science and art.

1855

The Annual of scientific discovery: or, Year-book of facts in science and art.

1862

The Annual of scientific discovery: or, Year-book of facts in science and art.

1865

The Annual of scientific discovery: or, Year-book of facts in science and art.

1856

The Annual of scientific discovery: or, Year-book of facts in science and art.

1854

The Annual of scientific discovery: or, Year-book of facts in science and art.

1858

The Annual of scientific discovery: or, Year-book of facts in science and art.

1857

The Annual of scientific discovery: or, Year-book of facts in science and art.

1864

The Annual of scientific discovery: or, Year-book of facts in science and art.

1851