48 Paper and paperboard; articles of paper pulp, of paper or of paperboard: United States
1914 ◽
Vol 178
(5)
◽
pp. 660-661
1975 ◽
Vol 37
(2)
◽
pp. 641-642
◽
1939 ◽
Vol 23
(254)
◽
pp. 225-226
◽
1973 ◽
Vol 31
◽
pp. 212-213
Keyword(s):
1995 ◽
Vol 53
◽
pp. 682-683
Keyword(s):
1994 ◽
Vol 52
◽
pp. 274-275
1994 ◽
Vol 52
◽
pp. 454-455