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   [ เกษตรศาสตร์ ( Agriculture ) ] back
S S1 S2 S4 S5 S6 S7 S9 SB SD SF SH SK Su
S60 S62 S63 S67

ลำดับที่LC คำอธิบาย
1 Agricultural meteorology. Crops and climate
2 Methods and systems of culture. Cropping systems Including fallowing, rotation of crops, plowing
3 Agricultural conservation
4 Melioration: Improvement, reclamation, fertilization, irrigation, etc., of lands
5 Organic farming. Organiculture
6 Special classes of lands and reclamation methods Including woodlands, burning of lands, deserts, saline environments, moors
7 Soil conservation and protection
8 Fertilizers and improvement of the soil
9 Farm machinery and farm engineering
   [แสดง 9/9 รายการ]