Some studies on determination of available phosphorus in Papua New Guinea soils /

समान संसाधन

• Soil and fertilizer phosphorus in crop nutrition /
  प्रकाशित: (1953)
• Phosphorus in sewage sludge and animal waste slurries : proceedings of the EEC seminar /
  प्रकाशित: (1981)
• Phosphorus- 32.
  प्रकाशित: (1989)
• Phosphorus in waters, effluents and sewages, 1980 : methods for the examination of waters and associated materials.
  प्रकाशित: (1981)
• Introduction to phosphorus chemistry
  द्वारा: Goldwhite, Harold
  प्रकाशित: (1981)