Livres associés

The phosphates of America. Where and how they occur; how they are mined; and what they cost. With practical treatises on the manufacture of sulphuric acid, acid phosphate, phosphoric acid, and concentrated super-phosphates, and selected methods of chemical analysis.

Fertilizer resources of the United States.

The effect of ignition on the solubility of soil phosphate.

The phosphates of America. Where and how they occur; how they are mined; and what they cost.

• Special report on tea-raising in South Carolina.
  Auteur(s): Shepard, Charles Upham
• Report of an analysis of cotton-wool, cotton-seed, Indian corn, and the yam potato made for the Black Oak Agricultural Society
  Auteur(s): Shepard, Charles Upham
• South Carolina phosphates. A lecture delivered before the Agricultural Society of South Carolina, Charleston, S.C., December 12, 1879
  Auteur(s): Shepard, Charles Upham