کتاب های G. Richard Jansen
Trends in Computer Algebra: International Symposium Bad Neuenahr, May 19–21, 1987 Proceedings
Richard D. Jenks (auth.), Rainer Janßen (eds.), 1988
Diet Evaluation. A Guide to Planning a Healthy Diet
G. Richard Jansen, Patricia A. Kendall, 1990
Diet Evaluation: A Guide to Planning a Healthy Diet
G. Richard Jansen, 1990
