1. Vasectomy and reversible vasocclusion;Hulka;Fertil Steril,1972
2. Electron microscopic examination of human vas deferens (abstr. 4055);McLeod;Fed Proc,1972
3. Sigma Technical Bulletin No. 175. The colorimetric determination of isocitric dehydrogenase,1971
4. Sigma Technical Bulletin No. 505. The colorimetric determination of glutamic-oxalacetic and glutamic-pyruvic transaminases,1969
5. Sigma Technical Bulletin No. 104. The colorimetric determination of acid and alkaline phosphatase,1963