/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: HorstMichaelVogelPhD https://cdn.slidesharecdn.com/profile-photo-HorstMichaelVogelPhD-48x48.jpg?cb=1586430582 Long-time programme and project management experience; specialization in integrated transboundary water management; specialization in environmental geology, which is concerned with natural resources and the environmental impact of their exploitation by man; specialization in soil and water conservation and conservation tillage; part-time lecturer on the ���properties and utilization of tropical soils���; utilization of the Internet in teaching, research, and work.