Environmental aspects of water spreading for ground-water recharge /

Bibliography: p. 19-21.

The fleas of North America : classification, identification, and geographic distribution of these injurious and disease-spreading insects /

Contribution from Bureau of Entomology and Plant Quarantine.

Spreading resistance analysis for silicon layers with nonuniform resistivity /

"Issued May 1979."

Effects of gust velocity spatial distributions on lateral-directional response of a VTOL aircraft

Mode of access: Internet.