The feeding of crops and stock; an introduction to the science of the nutrition of plants and animals,

Mode of access: Internet.

Bulletin /

WI docs no.: Agr. 3:1-99.

Fertilizer report. Agricultural Experiment Station of the Louisiana State University and A. & M. College

Mode of access: Internet.

Circular

Mode of access: Internet.

Essential elements and soil amendments for plants : sources and use for agriculture /

Mode of access: Internet.

Etude comparative des methodes d'analyse des engrais dans les divers pays /

Mode of access: Internet.

Les engrais.

Mode of access: Internet.

Western fertilizer handbook.

Mode of access: Internet.

Bulletin /

Mode of access: Internet.