24 BULLETIN 620, U. S. DEPARTMENT OF AGRICULTURE. 
PUBLICATIONS ON PULP AND PAPER. 
Paper Pulp from Various Woods. Forest Service Bulletin (unnumbered), by 
Henry E. Surface. (Out of print.) 
Experiments with Jack Pine and {Hemlock for Mechanical Pulp. Forest Service 
Bulletin (unnumbered), by J. H. Thickens. (Out of print.) 
*Bibliography of the Pulp and Paper Industries. Forest Service Bulletin 123, by 
Henry E. Surface. Price 10 cents. 
*The Grinding of Spruce for Mechanical Pulp. Forest Service Bulletin 127, by J.H. 
Thickens. Price 15 cents. 
*Suitability of Longleaf Pine for Paper Pulp. Department of Agriculture Bulletin 72, 
by Henry E. Surface and Robert E. Cooper. Price 5 cents. 
*Effects of Varying Certain Cooking Conditions in Producing Soda Pulpfrom Aspen. 
Department of Agriculture, Bulletin 80, by Henry E. Surface. Price 15 cents. 
*Ground Wood Pulp. Part I, Grinding of Cooked and Uncooked Spruce; Part 2, 
Substitutes for Spruce in the Manufacture of Ground Wood Pulp. Department of 
Agriculture Bulletin 343, by J. H. Thickens and G. C. McNaughton. Price 50¢ 
cents. ’ 
* No copies available, for free distribution. For sale by Superintendent of Documents, Government 
Printing Office, at the price indicated. 
ADDITIONAL COPIES 
OF THIS PUBLICATION MAY BE PROCURED FROM 
THE SUPERINTENDENT OF DOCUMENTS 
GOVERNMENT PRINTING OFFICE 
WASHINGTON, D. C. 
AT 
15 CENTS PER COPY 
V 
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