Subject
- Haber, Fritz, 1868-19342
- Hahn, Otto, 1879-19681
- Han'guk Kwahak Kisul Yŏn'guso1
- Haworth, Walter Norman, 1883-1
- Herbs--Therapeutic use1
- Hoff, J. H. van 't (Jacobus Henricus), 1852-19112
- India1
- Institut i︠a︡dernykh issledovaniĭ (Rossiĭskai︠a︡ akademii︠a︡ nauk)1
- Instituto Politécnico Nacional (Mexico)2
- Intellectuals1
- International Conference on the Peaceful Uses of Atomic Energy1
- International Congress of Pharmacology1
- International Congress of Soil Science2
- International Federation of Automatic Control1
- International Union against Cancer2
- International Union of Pure and Applied Chemistry1
- International Women's Year (1975)1
- Inventors3
- Iran2
- Iranian Biochemical Society1