Soil quality. Determination of mercury in aqua regia soil extracts with cold-vapour atomic spectrometry or cold-vapour atomic fluorescence spectrometry— 16 стр.
Packaging. Requirements for packaging recoverable through composting and biodegradation. Test scheme and evaluation criteria for the final acceptance of packaging— 26 стр.
Soil improvers and growing media. Sample preparation for chemical and physical tests, determination of dry matter content, moisture content and laboratory compacted bulk density— 20 стр.
Microbiology of food and animal feeding stuffs. Horizontal method for the enumeration of $Gb-glucuronidase-positive Escherichia coli. Colony-count technique at 44$0DC using 5-bromo-4-chloro-3-indolyl-$Gb-D-glucuronide— 16 стр.
