These volumes are a great contribution to the literature on organic semiconductors. Research on organic semiconductors represents a meeting place of physical methods, organic chemicals, and solid
state theory. The central problem in the study of organic semiconductors is to understand how electric charge enters and is transported through a molecular solid over very large distances -- a problem which touches on a
very wide spectrum of other fields of science. Part A is a reprint, with corrections, that covers research in the field up to 1965. Part B represents not only an update of its special subject, but a valuable reference
for use in related areas as well.