Ghulam NabiRahmatullahSalim, M.2020-09-022020-09-021990Tropical Agriculturist, 146:p.45-55https://dl-doa.nsf.gov.lk/handle/1/2732FERTILIZERSBioavailabilityInorganic-SOrganic-SSulphur fractionsSulphur fractions and their extractability in some arid and semi-arid soils of PakistanArticle