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by Chapman, Homer D.; University of California Division of Agricultural Sciences.; Pratt, Parker F.;
Year: 1961., Callno: 631.422 CHA [Q]
Book
by National Conference on Management of Nitrogen in Irrigated Agriculture (1978 : Sacramento, Calif.); Pratt, Parker F.; United States National Science Foundation.; University of California Dept. of Soil and Environmental Sciences.;
Year: 1978., Callno: 631.811.1:631.67 NAT [Q]
Book