A study of the effect of ionizing radiation on resistance, germination, and toxin synthesis of Clostridium botulinum spores, types A, B, and E

At head of title: The University of Michigan, College of Engineering, Dept. of Chemical and Metallurgical Engineering. Final report.

Extending the human life span : social policy and social ethics /

"NSF/RA 770123."

Researches on the germination of the pollen grain and the nutrition of the pollen tube /

Includes bibliographical references.

Age and year of collection affect germination of winterfat seeds /

Caption title.