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Vitamin D refers to a group of fat-soluble secosteroids which are responsible for improving intestinal absorption of phosphate, calcium and magnesium, and several others biological effects. It plays a crucial role in metabolism and calcium homeostasis. The most significant compounds of vitamin D in human beings are vitamin D2 and vitamin D3. The main source of vitamin D found in nature is the synthesis of cholecalciferol in the lower layers of...

Reprint of the original, first published in 1857.

Reprint of the original, first published in 1857.

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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This ...

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Life often evolves differently than we had hoped or expected. Some of life's transitions lead to a love we have only dreamed of, but others can traumatize and overwhelm us completely. As a result, we feel discouraged and disenchanted as we quietly start to wonder about the meaning of life. John Edwards understands this deeply as he takes us on an elegant, insightful, and profound journey of his personal experiences that are a jumping-off p...

Life often evolves differently than we had hoped or expected. Some of life's transitions lead to a love we have only dreamed of, but others can traumatize and overwhelm us completely. As a result, we feel discouraged and disenchanted as we quietly start to wonder about the meaning of life. John Edwards understands this deeply as he takes us on an elegant, insightful, and profound journey of his personal experiences that are a jumping-off p...

Keine Beschreibung.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

Keine Beschreibung.

Keine Beschreibung.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

Keine Beschreibung.