Prev Next Sent from: Hjallerup Triangle Piece 1981-00-00 Mogens Otto Nielsen, Denmark Section: Mail Art Network Sent from: Hjallerup, Denmark Medium: Printed matter Category: Book Dimensions (cm): 29.7 x 21 Pages: 43 Subject: mogens otto nielsen, triangle piece, mogens otto nielsen, atmosphere controlled, mail art, visual poetry, reproduction, modification