Residual effects of fall- and spring-applied nitrogen fertilizers on crop yields in the southeastern United States /

Caption title.

Decomposition of wood and bark sawdusts in soil, nitrogen requirements and effects on plants /

Caption title.

Nitrogen trichloride as a chlorinating agent : the action of nitrogen trichloride on ethyl bromide /

Typescript.

An outline of organic nitrogen compounds,

Mode of access: Internet.

The nitrogen system of compounds, by Edward Curtis Franklin.

Bibliographical foot-notes.

Liquid nitrogen fertilizers for direct application /

Bibliography: p. 40-46.