Autor: D. Vaughan

Ajutor

3 Ebooks de D. Vaughan

T. Asbury & D. Vaughan: Ophthalmologie
In Zeiten rapide anwachsenden Wissens auf vielen Gebieten der Augenheilkunde ist es schwierig, ein Buch zu schreiben, das nicht sehr schnell seinen Wert dadurch ein­ büßt, daß es schon vor oder kurz …
PDF
Germana
DRM
€56.84
R.E. Malcolm & D. Vaughan: Soil Organic Matter and Biological Activity
It has long been recognized that soil organic matter is the key to soil fertility. As a nutrient store it gradually provides essential elements which the soil cannot retain for long in inorganic form …
PDF
Engleză
DRM
€57.64
Nigel Maxted & Helen Moss: Asian Vigna
The Asian beans and grams, the species of Vigna (subgenus Ceratotropis), include several legumes that are an essential component in the diets of a large proportion of Asia’s population, and interest …
PDF
Engleză
DRM
€114.91