1. Efficiency of the grease film extraction technique in soil micro-arthropod surveys;Aucamp,1967
2. The grease film extractor and its application in soil acarology;Aucamp,1969
3. Notes on the efficiency of funnel batteries for the extraction of soil micro-arthropods;Aucamp;Tydskr. Natuurw.,1964
4. The efficiency of an improved grease film extractor in stratification studies of soil micro-arthropods;Aucamp;S. Afr. J. Sci.,1965
5. A sampling device for soil microarthropods;Auerbach;Acarologia,1960