However, a school districtâs actual communication network can be very different from the pattern of communication established by its formal organizational structure. Four main communication roles have emerged in network analysis: gatekeepers, liaisons, bridges, and isolates (Belussi, 2012).
People from all over the world know the four most popular types of the Pall Mall cigarettes. 1  1.Pall Mall Filters - most probably the best-selling variety. These cigarettes have an intense and stimulating taste. 2  2.Pall Mall Lights - usually preferred by women smokers because of a milder taste and delicate aroma.
Skoal is the number one brand of all smokeless tobacco in sales volume, while Copenhagen is a premium, more expensive type of tobacco. All smokeless tobacco products are addictive and they can cause cancer. Below is a list of all well known smokeless tobacco brands and their available flavors :ll smokeless tobacco products are addictive and they can cause cancer. Below is a list of all well known smokeless tobacco brands and their available flavors 1  : Ariva. 2  Beechnut Classic. 3  Beechnut Wintergreen.