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Analyses and Valuations of Commercial Fertilizers and Ground Bone ; Analyses of Agricultural Lime
Benno Humbert Alfred Groth
, Charles Sanderson Cathcart
, John Putnam Helyar
, Maurice Adin Blake
, Ralph L. Willis
· 1915
Results of Seed Inspection 1915-1916
John Putnam Helyar
· 1916
Results of Seed Inspection-- 1914
John Putnam Helyar
, Robert Schmidt
· 1915
Results of Seed Inspection, 1917
John Putnam Helyar
· 1918
Digest and Copy of Law Regulating the Weighing, Testing and Purchasing of Milk and Cream (Chapter 31, Laws of 1916)
Augustine Wilberforce Blair
, John Putnam Helyar
, Maurice Adin Blake
, Melville Thurston Cook
, Roscoe W. DeBaun
, Thomas J. Headlee
, W. J. Carson
· 1915
The New Jersey Seed Law
John Putnam Helyar
· 1916
Results of Seed Inspection-- 1913
John Putnam Helyar
· 1914
Saving Beans and Peas for Food and Seeding Purposes
John Putnam Helyar
· 1917
Regulations and Instructions Relating to the Labelling, Inspection and Analysis of Seeds in New Jersey
John Putnam Helyar
· 1917
The Seed Situation
John Putnam Helyar
· 1917
