21 shi ji chu wo guo yu ye ke ji zhong dian ling yu fa zhan zhan lüe yan jiu
By: Zhongguo shui chan ke xue yan jiu yuan bian
Edition: Di 1 ban
Publisher: Zhongguo nong ye ke ji chu ban she
Published: 1999
Place of publication: Beijing
Language: chi
Number of pages: 209
Other titles: Er shi yi shi ji chu wo guo yu ye ke ji zhong dian ling yu fa zhan zhan lüe yan jiu