. "Handbook" . . . "Hand Book" . . . . . . . "instructional works" . . . . "Manual" . "''vade mecum''" . "handbook" . "Ench" . "reference book" . "Vade-Mecum" . . . . . . "Handbooks" . . "Handbook" . "vademecum" . "vade-mecum" . . "vade mecum" .