http://hdl.handle.net/1811/44823 2013-05-25T20:16:40Z 2013-05-25T20:16:40Z American Institute of the City of New York http://hdl.handle.net/1811/44860 2010-02-16T07:12:38Z 1941-07-01T00:00:00Z

Science Observer: Volume 3, no. 7 (July 1941) American Institute of the City of New York

1941-07-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44859 2010-02-16T07:12:09Z 1941-06-01T00:00:00Z

Science Observer: Volume 3, no. 6 (June 1941) American Institute of the City of New York

1941-06-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44858 2010-02-16T07:12:46Z 1941-05-01T00:00:00Z

Science Observer: Volume 3, no. 5 (May 1941) American Institute of the City of New York

1941-05-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44857 2010-02-16T07:12:30Z 1941-04-01T00:00:00Z

Science Observer: Volume 3, no. 4 (April 1941) American Institute of the City of New York

1941-04-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44842 2010-02-17T07:04:22Z 1941-03-01T00:00:00Z

Science Observer: Volume 3, no. 3 (March 1941) American Institute of the City of New York

1941-03-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44839 2010-02-16T07:09:00Z 1941-02-01T00:00:00Z

Science Observer: Volume 3, no. 2 (February 1941) American Institute of the City of New York

1941-02-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44837 2010-02-16T07:10:56Z 1940-12-01T00:00:00Z

Science Observer: Volume 2, no. 9 (December 1940) American Institute of the City of New York

1940-12-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44833 2010-02-16T07:07:12Z 1940-11-01T00:00:00Z

Science Observer: Volume 2, no. 8 (November 1940) American Institute of the City of New York

1940-11-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44832 2010-02-16T07:08:33Z 1940-10-01T00:00:00Z

Science Observer: Volume 2, no. 7 (October 1940) American Institute of the City of New York

1940-10-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44831 2010-02-16T07:08:23Z 1940-06-01T00:00:00Z

Science Observer: Volume 2, no. 6 (June 1940) American Institute of the City of New York

1940-06-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44828 2010-02-16T07:04:58Z 1940-05-01T00:00:00Z

Science Observer: Volume 2, no. 5 (May 1940) American Institute of the City of New York

1940-05-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44827 2010-02-16T07:08:12Z 1940-04-01T00:00:00Z

Science Observer: Volume 2, no. 4 (April 1940) American Institute of the City of New York

1940-04-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44825 2010-02-16T07:05:36Z 1940-03-01T00:00:00Z

Science Observer: Volume 2, no. 3 (March 1940) American Institute of the City of New York

1940-03-01T00:00:00Z American Institute of the City of New York American Institute of the City of New York http://hdl.handle.net/1811/44824 2010-02-16T07:06:40Z 1940-02-01T00:00:00Z

Science Observer: Volume 2, no. 2 (February 1940) American Institute of the City of New York

1940-02-01T00:00:00Z American Institute of the City of New York