2 titles on GMO: 1. Unanswered Safety Questions when employing GMO's /// 2. Past, Present and Future Considerations in Risk Assessment when using GMO's (36 Euro each, + shipping costs; please mention the title wanted!!), (Workshop Proceedings Leeuwenhorst Congress Centre Noordwijkerhout the Netherlands, May 2-4, 1995 and March 5-6, 1998).