`(3) the term `labor dispute' has the same meaning as in section 2(9) of the National Labor Relations Act (29 U.S.C. 152(9)); and
」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」」＜第２章　物質の構成粒子＞（教p19-）