LAWES AGRICULTURAL TRUST 



Rothamsted Experimental Station 

 Harpenden 



REPORT 1918-20 



with the 



Supplement 



to the 



''Guide to the Experimental Plots" 



containing 



The Yields per Acre, etc. 



Telegrams Telephone Station 



Laboratory, Harpenden No. 21 Harpenden Harpenden (Midland) 



HARPENDEN 



Printed by D. J. Jeffery. Vaughan Road 



19 2 1 



Price 2'6 (Foreign Postage extra) 



