Economic analysis of the values of surface uses of state lands, task 4John W. Duffield · First published 1993Open the Tome
Effect of proposed changes to rod and reel subsistence harvest regulations in the lower Yukon/Kuskokwim areaJohn W. Duffield · First published 2000Open the Tome
Damage to western Washington forests from November 1955 cold waveJohn W. Duffield · First published 1956Open the Tome
Annotated list of pine hybrids made at the Institute of Forest GeneticsJohn W. Duffield · First published 1953Open the Tome
