Автор: D. Vaughan

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 …

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 …

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 …