Further, the periodicals subclasses have strict rules on enclosures, have regulations that depend on whether the publication is bound or unbound, and most have rates that depend on whether the material inside is advertising or editorial.
The periodicals subclasses haven't any rules on enclosures
mnli hypothesis: The periodicals subclasses haven't any rules on enclosures premise: Further, the periodicals subclasses have strict rules on enclosures, have regulations that depend on whether the publication is bound or unbound, and most have rates that depend on whether the material inside is advertising or editorial.