A world of green hills; observations of nature and human nature in the Blue Ridge - Torrey, Bradford, 1843 -1912 (Houghton, Mifflin and company, 1898)

Worthwhile flowering shrubs, fall 1932 : special list of rare and unusual plants at attractive prices - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (A.M. Leonard & Son, 1932)

xi an zhi wu zhi - Xie, Yintang, Wang Mali & Zhao Guifang (shan xi ke xue ji shu chu ban she, 2007)

xin jiang zong he kao cha bao gao:1956 nian 新疆综合考察报告:1956年 - Zhongguo ke xue yuan. Xinjiang zong ge kao cha dui 中国科学院新疆综合考察队 (ke xue chu ban she 科学出版社, 1958)

Yard and garden; a book of practical information for the amateur gardener in city, town or suburb - Baker, Tarkington, 1878 -1924 (The Bobbs-Merrill company, 1908)

The year book, 1941 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, Inc, 1941)

The year book for 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1937)

The year book for 1938 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1938)

The year book for 1940 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1940)

The year book for 1942 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1942)

The year book for 1943 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1943)

The year book for 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, 1944)

The Year book for 1953 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, Inc, 1953)

The Year book for 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, Inc, 1955)

The year book for 1959 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, Inc, 1959)

You can now get a thousand for what you once paid for a hundred [bulletin and price list] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (E.C. Robbins, 1931)

yun nan zhi wu zhi - Wu, Zhengyi. (ke xue chu ban she, 1997)

Zeitschrift für Botanik (1915)

Zeitschrift für wissenschaftliche Mikroskopie und mikroskopische Technik (S. Hirzel [etc.], 1902)

Zeitschrift für wissenschaftliche Mikroskopie und mikroskopische Technik (S. Hirzel [etc.], 1904)

Zeitschrift für wissenschaftliche Zoologie - Kölliker, Albert, 1817 -1905 (Wilhelm Engelmann, 1910)

Zhongguo yao yong zhi wu zhi 中国药用植物志 - Pei, Jian 裴鑑 (zhong guo ke xue yuan zhi wu yan jiu suo中国科学院植物研究所)

zhu xi zhi wu zhi - Gan, Qiliang (hu bei chang jiang chu ban ji tuan hu bei ke xue ji shu chu ban she, 2005)

Zoologische Jahrbücher. Supplementheft (Gustav Fischer, 1904)