Class number details
S604.8-621.5 : Melioration: Improvement, reclamation, fertilization, irrigation, S600-600.7 Agricultural meteorology. Crops and climate
S602.5-604.37 Methods and systems of culture. Cropping systems S604.5-604.64 Agricultural conservation S605.5 Organic farming. Organiculture S606-621.5 Special classes of lands and reclamation methods |
Library items with class number S604.8-621.5 (0)
empty descriptor