Growth and seed production of sawtooth oak (Quercus acutissima) 22 years after direct seeding /

"August 1997."

Seed production areas in the Lake States : guidelines for their establishment and management /

"June 1959."

Red clover seed production /

Mode of access: Internet.

Chemical control of weeds in crimson clover grown for seed production /

Caption title.

The biology of poor seed production in Tephrosia vogelii

Bibliography: p. 34.

Potato scab treatments and seed vitality ; Better potato production methods for Iowa /

Cover title.

Seed farming in Britain : a practical treatise on the cultivation of vegetables for the production of seeds.

Mode of access: Internet.