Die fabrikation des superphosphats mit berücksichtigung der anderen gebräuchlichen düngemittel; ein handbuch für den düngerchemiker im betriebe und im laboratorium,

"Literatur": p. 460.

Manual on fertilizer manufacture, prepared for the instruction of candidates chosen for training in supervisory positions in fertilizer plants, and for the not too well technically trained who want to know more about fertilizer manufacturing procedures.

Mode of access: Internet.

Irrigations, engrais liquides et améliorations foncières permanentes.

Bibliographical footnotes.

Die rationelle düngung der landwirthschaftlichen kulturpflanzen. Ein cyclus von drei vorträger.

Mode of access: Internet.

Die künstlichen Dünger. Vorkommen, Handel, Fabrikation, und Bedeutung, derselben für die Landwirtschaft.

Mode of access: Internet.

Wie beeinflusst die düngung die beschaffenheit des bodens und seine eignung für bestimmte kulturgewächse?

Thesis, Bonn university.

Boron in agriculture.

Includes bibliographical references.

A Competitive assessment of the U.S. nitrogen fertilizer industry /

"October 1986."

Directory, U.S. fertilizer port facilities /

"Revision of an earlier report published in 1970 [under title: Directory of U.S. ports exporting fertilizers]"

Hawaii, agriculture & TVA /

Mode of access: Internet.

Soils book;

Mode of access: Internet.

The American fertilizer handbook.

"A standard directory of the fertilizer industry and allied trades."

Publications.

Reprints of circulars, bulletins and reports issued during the year.

Manures and manuring (formerly Sectional volume of collected leaflets, no. 8)

Later editions published under title: Manures and fertilizers.

American fertilizer.

Mode of access: Internet.