au.\*:("VAN LAERHOVEN CJ")
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EFFECTS OF SEWAGE SLUDGE COMPOSITION, APPLICATION RATE, AND LIME REGIME ON PLANT AVAILABILITY OF HEAVY METALS.JOHN MK; VAN LAERHOVEN CJ.1976; J. ENVIRONM. QUAL.; U.S.A.; DA. 1976; VOL. 5; NO 3; PP. 246-251; BIBL. 15 REF.Article
A SYSTEM OF SOILS INFORMATION RETRIEVAL = UN SYSTEME DE RECHERCHE DE DONNEES PEDOLOGIQUESJOHN MK; VAN LAERHOVEN CJ; SPROUT PN et al.1972; CANAD. J. SOIL SCI.; CANADA ; 1972, VOL. 52, NUM. 0003, P. 351 A 357Serial Issue
CADMIUM, LEAD AND ZINC ACCUMULATION IN SOILS NEAR A SMELTER COMPLEXJOHN MK; VAN LAERHOVEN CJ; CROSS CH et al.1975; ENVIRONMENT. LETTERS; U.S.A.; DA. 1975; VOL. 10; NO 1; PP. 25-35; BIBL. 17 REF.Article