Hua bei ping yuan han lao qi hou (Hua bei ping yuan nong ye zi ran tiao jian yu qu yu kai fa yan jiu)
Edition: Di 1 ban edition
Publisher: Xin hua shu dian Beijing fa xing suo fa xing
Published: 1990
Language: cmn
Format: Unknown Binding
Number of pages: 192
ISBN-13: 9787030015044