1,793円

827円 This book was the first work to attack Von Liebig’s salt fertilizer thesis, and it stands as valid today as when first written over 100 years ago. Translated from the German writings of Julius Hensel, the book was designed to introduce the people of the U.S. to the idea that plants require health...

1,657円 This stimulating book provides a highly practical window into the complex, interdependent relationships between soil, plants, animals, and human beings, including special insight into the fascinating life cycle of healthy soils and the imminent dangers we face should their existence become threat...

1,657円 This volume is a timely and worthy addition to the preceding Albrecht Papers. Those who read it will be inspired to spread the word about the logical connections among soil health, animal health and human health until it grows into a public demand for fundamental change that is as compelling as i...

2,652円 Updated 5th Edition with new sites & museums! Learn Where & How to Dig, Pan and Mine Your Own Gems & Minerals SOUTHWEST Arizona California Colorado Hawaii Kansas Nevada New Mexico Oklahoma Texas Utah Whether you’re digging for the first time or are an experienced rockhound or “pro...

2,652円 Updated 6th edition with new sites & museums! Learn Where & How to Dig, Pan and Mine Your Own Gems & Minerals NORTHWEST Alaska • Idaho • Iowa • Minnesota • Montana • Nebraska North Dakota • Oregon • South Dakota • Washington • Wyoming Whether you're digging for the first time or are an experience...

2,652円 Updated 6th edition with new sites & museums! Learn Where & How to Dig, Pan and Mine Your Own Gems & Minerals NORTHEAST Connecticut • Delaware • District of Columbia • Indiana • Illinois • Maine Massachusetts • Maryland • Michigan • New Hampshire • New Jersey New York • Ohio • Pennsylvania • Rhod...

1,989円 Learn Where & How to Dig, Pan and Mine Your Own Gems & Minerals NORTHEAST Connecticut Delaware District of Columbia Indiana Illinois Maine Massachusetts Maryland Michigan New Hampshire New Jersey New York Ohio Pennsylvania Rhode Island Vermont Wisconsin Whether you’re...

1,989円 Learn Where & How to Dig, Pan and Mine Your Own Gems & Minerals NORTHWEST Alaska Idaho Iowa Minnesota Montana Nebraska North Dakota Oregon South Dakota Washington Wyoming Whether you’re digging for the first time or are an experienced rockhound or “prospector,” with a simple roc...

562円 Those stones you see might be an important mineral that the Earth creates. This book will open your child’s minds to the importance of the rocks and minerals you can dig up. It is a very informative book that is complete with images and just the right amount of texts too. Go ahead and get a copy ...

1,500円 Extrait : "Depuis le jour où l'homme a , pour la première fois, soulevé l'épiderme terrestre pour y creuser des sillons et pour y tracer des chemins ; depuis l'époque où il a su pénétrer dans le sein de l'écorce superficielle, soit pour y dérober l'eau potable, soit pour ravir aux entrailles du s...

748円 Unlock the long‑standing allure of jade with this engaging collection of historical gemological and crystallographic articles, selected from sources dating back to the early 1900s and earlier. Jade Gemstones is carefully curated for modern readers. The writings explore jade's key characteristics,...