$13BD!:`!M"!0#!9%!:m!=b(B: s = Seven laws of teaching - Gregory, John Milton; $1!=h!D-!N(s; $1!UR!KH!92s ($1!a)!H$(B: s $1!GK!1W!CZ!3K!JH!\k(B,s, 1991)
Translation of: Seven laws of teaching.
Keywords: Sunday schools -- Study and teaching