Hoffmann, D.
- A Brief Study to Correlate the Yearly Fluctuations of Precipitation with the Diameter Increment of Red Pine. 1949
- A Comparison Between the Growth of Red Pine in the Harvard Forest and Scotch Pine in Germany with Some Remarks About the Silviculture and Utilization of Both Species in Their Native Countries. 1949
- The Role of Photoperiodism in Forest Genetics.. 1950