"783.1843" . . "783.18 |c Octetten (verschillende zangstemmen) |d Octets (different singing voices)" . "3992" . "782.43 |c Madrigalen, van poëzie afgeleide vormen |d Madrigals, forms derived from poetry" . . "3992 782.43 |c Madrigalen, van poëzie afgeleide vormen |d Madrigals, forms derived from poetry 783.18 |c Octetten (verschillende zangstemmen) |d Octets (different singing voices) 783.1843" . . "3992" . .