[□] □
[□=□] □
[□ & □] □
Each of these packages , in turn , contains files numbering from a few to several hundred . The membrane can be used directly in activated Sludge reactor or separately in the effluent stream from the activated sludge reactor . Polish patrol met a party of Germans one kilometre from the East Prussian frontier near Pelta . In addition , we will work to strengthen democratic institutions and the rule of law in allied nations under attack from the illegal drug trade . We will try to approach this problem from two sides .