Pukapuka ā-ringa mō te Pahikara Hiko ENGWE P20: Te Huihuinga, te Whakahaere, te Tiaki, me te Pūtāhui
He pukapuka ārahi whānui mō te pahikara hiko ENGWE P20, e kapi ana i ngā aratohu haumaru, ngā tohutohu huihuinga, ngā taipitopito o ngā wāhanga, ngā tohutohu tiaki, ngā whakatau raruraru, me ngā mōhiohio pūtāhui.