Russian ethnographer Gumilev describes the process of how human systems go through a set of phases that parallel the birth, growth, maturity, and death stages of the life cycle.
(Russian ethnographer Gumilev; describes; the process of how human systems go through a set of phases) (human systems; go; through a set of phases) (phases; parallel; the birth, growth, maturity, and death stages of the life cycle)
Russian ethnographer Gumilev human systems phases
describes go parallel
the process of how human systems go through a set of phases
through a set of phases
the birth, growth, maturity, and death stages of the life cycle