ACTA AGRICULTURAE BOREALI-SINICA ›› 1991, Vol. 6 ›› Issue (4): 127-127. doi: 10.3321/j.issn:1000-7091.1991.04.023
Special Issue: Pear; Plant protection;
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URL: http://www.hbnxb.net/EN/10.3321/j.issn:1000-7091.1991.04.023
http://www.hbnxb.net/EN/Y1991/V6/I4/127