1. Separation and detection of submicrogram quantities of pesticides by an improved TLC technique

   • Herman Beckman
   • Wray Winterlin

   OriginalPaper Pages: 78 - 85

2. Persistence of methyl parathion residues on sunflower seeds

   • H. W. Dorough
   • N. M. Randolph
   • G. H. Wimbish

   OriginalPaper Pages: 86 - 89

3. Automated determination of orthophosphate: An application designed especially for the combusted product of organophosphorous pesticide residues

   • Daniel E. Ott
   • Francis A. Gunther

   OriginalPaper Pages: 90 - 96

4. The effects of combinations of insecticides on susceptible and resistant mosquito fish

   • Denzel E. Ferguson
   • C. Rex Bingham

   OriginalPaper Pages: 97 - 103

5. Determination of 2,4-D residues in animal products

   • D. G. Crosby
   • J. B. Bowers

   OriginalPaper Pages: 104 - 107

6. Effect of 2,4-dichlorophenoxyacetic acid on different metabolic types of bacteria

   • Lewis T. Hart
   • A. D. Larson

   OriginalPaper Pages: 108 - 120

7. Editorial

   EditorialNotes Pages: 121 - 121