people and progressde William S. Gray, May Hill ArbuthnotMateriasReadersEdiciones (1)people and progress (1947)scott, foresman and company · inglésMás obras de William S. GrayOOn their own in readingOn their own in readingWWhat makes a book readableWhat makes a book readableOOn their own in readingOn their own in reading
WWhat makes a book readable, with special reference to adultsWhat makes a book readable, with special reference to adults of limited reading ability1935
