Soil, humus and health an organic guide

समान संसाधन

• Humus acids of soils /
  द्वारा: Orlov, D. S. (Dmitrii Sergeevich)
  प्रकाशित: (1985)
• Effect of organic fertilizer on soil physical properties and plant growth /
  द्वारा: Jo, In-Sang
  प्रकाशित: (1990)
• Application of nitrogen-fixing systems in soil improvement and management
  द्वारा: Hamdi, Y.A
  प्रकाशित: (1982)
• Potential hazards when using organic materials as fertilizers for crop production /
  द्वारा: Jacobs, Lee W.
  प्रकाशित: (1990)
• Soil fertility evaluation and control /
  द्वारा: Black, C. A. (Charles Allen)
  प्रकाशित: (1993)