au.\*:("HEATH RJ")
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POTASH: PLANNING FOR MORE EXPORT CAPACITY = POTASSE: PROJET D'AUGMENTER LA CAPACITE D'EXPORTATIONHEATH RJ.1980; WEST. MINER.; CAN; DA. 1980; VOL. 53; NO 11; PP. 20-22Article
CURRENT MARKET SITUATION AND OUTLOOK FOR POTASH = SITUATION ACTUELLE DU MARCHE ET PERSPECTIVES POUR LA POTASSEHEATH RJ.1981; WEST. MINER (CALGARY); ISSN 0700-4435; CAN; DA. 1981; VOL. 54; NO 11; PP. 13-16; 3 P.Article
WORLD TRENDS IN POTASH PRODUCTION AND CONSUMPTION.HEATH RJ.1977; WEST. MINER.; CANADA; DA. 1977; VOL. 50; NO 11; PP. 9-13 (4P.); 4 ILL.Article