1. Effect of surfactants on soil bacteria

   • Ludwig Hartmann

   OriginalPaper Pages: 219 - 224

2. Alkyl benzene sulfonate effects on stream algae communities

   • Charles E. Hicks
   • John M. Neuhold

   OriginalPaper Pages: 225 - 236

3. Forced volatilization cleanup for gas chromatographic assay of pesticide residues

   • F. A. Gunther
   • R. C. Blinn
   • D. E. Ott

   OriginalPaper Pages: 237 - 244

4. Forced volatilization or sweep extraction of organochlorine pesticide from vegetable extracts

   • R. Mestres
   • F. Barthes

   OriginalPaper Pages: 245 - 250

5. Insect toxicological studies of maleic hydrazide translocated in the potato plant

   • W. N. Yule
   • I. Hoffman
   • E. V. Parups

   OriginalPaper Pages: 251 - 256

6. A method for the determination of pentachlorophenol in human urine in picogram quantities

   • A. Bevenue
   • J. R. Wilson
   • G. Mallett

   OriginalPaper Pages: 257 - 266