info:oai:myais.fsktm.um.edu.my:2269info:ofi/fmt:xml:xsd:journalconferenceNoor Wahida Mahasim Ahmad Saat Zaini Hamzah Rita Rohaizah Sohari Khaniza Hasliza Abdil Khali 2005Nitrate and Phosphate Contents and Quality of well water in North-Eastern Districts of Kelantan