Books by "George K. Helder"

1 books found

The Analysis and Registration of Commercial Feedstuffs

The Analysis and Registration of Commercial Feedstuffs

by Albert Dickens, Albert Moore Ten Eyck, Charles Oscar Swanson, D. E. Lewis, George C. Wheeler, George K. Helder, Leland Everette Call, Leslie Arthur Fitz, Thomas J. Headlee, William Marion Jardine

1913