World problems in the classroom :
Abraham, Herbert John, 1904-
World problems in the classroom : a teacher's guide to some United Nations tasks / Herbert J. Abraham. - Paris : UNESCO, 1973. - 223 p. ; retrs., fot.
9231010484
37.017.7 (100)=20 ABR.
World problems in the classroom : a teacher's guide to some United Nations tasks / Herbert J. Abraham. - Paris : UNESCO, 1973. - 223 p. ; retrs., fot.
9231010484
37.017.7 (100)=20 ABR.