au.\*:("ZIELKE RC")
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REGISTRATION OF EL40 SUGARBEET PARENTAL LINE (REG. NO. PL21)HOGABOAM GJ; ZIELKE RC; SCHNEIDER CL et al.1982; CROP SCIENCE; ISSN 0011-183X; USA; DA. 1982; VOL. 22; NO 3; PP. 700Article
BEET FOR SUGAR AND ALCOHOL PRODUCTIONCHRISTENSON DR; ZIELKE RC.1981; MICH., COOP. EXT. SERV., EXT. BULL.; USA; DA. 1981; E-1524; 2 P.Serial Issue
