CONTENT AND DISTRIBUTION OF IRON IN THE SOILS OF HEBEI
Sun Zuyan, Zhou Qiru, Sun Quanxian, Xu Changjin, Ma Wenqi
ACTA AGRICULTURAE BOREALI-SINICA . 1987, (1): 49 -54 .  DOI: 10.3321/j.issn:1000-7091.1987.01.009