| http://www.w3.org/ns/prov#value | - NGTH IN MICRONS PAIENIED JAN 1 4 SHEU S U? 5 OIL SOURCE OIL FILM LEADING EDGE METHOD AND APPARATUS FOR DETECTION OF PETROLEUM PRODUCTS This invention relates to pollution detection and more particularly to a method and apparatus for detecting and sensing the presence or absence of petroleum products, such as oil, in or on water.
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