Special Bulletins

• (1949) Saving Your Valued Elms.
• (1949) Combating the Dutch Elm Disease. Dimond, A.E. & Plumb, G.H.
• (1952-R) Combating the Dutch Elm Disease. Dimond, A.E. 
• (1969) A Field Technique for Measuring Photosynthesis Using 14-Carbon Dioxide. Incoll, L.D. & Wright, W.H.
• (1973) Nitrogen Fertilizer Shortages. Frink, C.R.