1. Phototaxis

   • Selina W. Bendix

   OriginalPaper Pages: 145 - 208

2. Respiration III

   • Walter Stiles

   OriginalPaper Pages: 209 - 260

3. Crop rotation and fallowing in relation to tobacco disease control

   • Randall R. Kincaid

   OriginalPaper Pages: 261 - 276