Annual report of the board of managers of the Franklin Institute
1899 ◽
Vol 147
(2)
◽
pp. 153-160
1898 ◽
Vol 145
(2)
◽
pp. 155-160
1900 ◽
Vol 149
(5)
◽
pp. 388-389
1897 ◽
Vol 143
(2)
◽
pp. 140-144