41. Recent advances in the study of plant viruses Creator: Smith, Kenneth Manley, 1892- Collection: Core Historical Literature of Agriculture Publisher: P. Blakiston's Son & Co., Inc., Publication Place: Philadelphia : Date: 1933 Format: Book
42. Nutrition Creator: Lusk, Graham, 1866-1932. Collection: Core Historical Literature of Agriculture Publisher: P. B. Hoeber, Inc., Publication Place: New York : Date: 1933 Format: Book
43. The physiological effects of radiant energy Creator: Laurens, Henry, 1885- Collection: Core Historical Literature of Agriculture Publisher: The Chemical Catalog Company, Inc., Publication Place: New York : Date: 1933 Format: Book
44. A study of rural public health service Creator: Freeman, Allen Weir, 1881- Collection: Core Historical Literature of Agriculture Publisher: Commonwealth Fund, Publication Place: New York : Date: 1933 Format: Book
45. The agricultural emergency in Iowa Creator: Iowa State University. Collection: Core Historical Literature of Agriculture Publisher: Collegiate Press, Publication Place: Ames : Date: 1933 Format: Book