Chemistry and biology of pteridines and folatesProceedings of the 12th International Symposium on Pteridines and Folates, National Institutes of Health, Bethesda, Maryland, June 17...

gan Kapatos, Gregory; Editor, Levine, Robert A; Editor, Milstien, Sheldon; Editor, Shane, Barry; Editor
Cyhoeddwyd 2002

Evaluation research and practice : comparative and international perspectives /

gan American-German Workshop on Evaluation Research
Cyhoeddwyd 1981