diffusion of innovation theory DOI
induced innovation theory
collision theory hard sphere theory
hard sphere theory collision theory
lipoid-sieve theory lipoid-filter theory
TRIZ theory of inventive problem solving theory
TRIZ发明问题解决理论理论
TRIZ理论发明问题解决理论
contemporary literature in its general sense
geopolitical situation and Nigu the concept of literature
Tonggu award , Mechanism, Guangxi Literature
20 lh century literature of China
a type of literature consisting mainly of short sketches