Langenheim J H
Botany : plant biology and its relation to human affairs - New York John Wiley and Sons 1982 - 624 Pages
nitrogen cycle
nitrogencycle
Plant science
stem modification
580 / LAN/BO
Botany : plant biology and its relation to human affairs - New York John Wiley and Sons 1982 - 624 Pages
nitrogen cycle
nitrogencycle
Plant science
stem modification
580 / LAN/BO