By Dunn, Opal, Paterson, Bettina, Patterson
By Bettina Bird, Ian Falk, Jack Larkin, Bird, Bettina, Falk, Ian, Larkin, Jack
By Falk, Ian, Bird, Bettina, Isaacs, Roslyn
By Paterson, Bettina
By Selby, Bettina
By Stangneth, Bettina
By Pitman's College, Pitman, Croft, Bettina
By Bartz, Bettina, Opitz, Helmut, Richter, Elisabeth
By von Stamm, Bettina
By Campbell, Richard, Martin, Christopher R., Fabos, Bettina
By Laird, Elizabeth, Paterson, Bettina
By H?rlimann, Bettina
By Bird, Bettina
By Zietman, Clive; Zietman, Bettina
By Gehrke, Bettina, Claes, Marie-Therese
By Walker, Lois, Collins Big Cat, Guthridge, Bettina