The Year book for 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, Inc, 1956)

The Year book for 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Weston Nurseries, Inc, 1957)

Year book of the Pennsylvania Horticultural Society - Pennsylvania Horticultural Society. (Pennsylvania Horticulutural Society, 1935)

Year book of the Pennsylvania Horticultural Society - Pennsylvania Horticultural Society. (Pennsylvania Horticulutural Society, 1936)

Year book of the Pennsylvania Horticultural Society - Pennsylvania Horticultural Society. (Pennsylvania Horticulutural Society, 1987)

Yearbook of the Heather Society - Heather Society (The Society, 1971)

The Yokohama Nursery Co., Ltd - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yokohama Nursery Co., Ltd, 1898)

Yopp's 26th annual seed catalog and garden guide, 1936 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Co., Inc, 1936)

Yopp's 27th annual seed catalog and garden guide, 1937 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Yopp Seed Co., Inc, 1937)

Your bargain book of fruits and flowers, spring 1943 : plant for victory, for profit Whitten's worthwhile nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Whitten Nurseries, 1943)

Your garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waukegan Nurseries, Incorporated, 1945)

Your garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waukegan Nurseries, Inc, 1940)

Your garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waukegan Nurseries, Incorporated, 1941)

Your garden - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waukegan Nurseries, Incorporated, 1942)

Your garden, 1944 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Waukegan Nurseries, Incorporated, 1944)

Your gardening guide to better living : 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Green Valley Nursery Inc, 1957)

Your home grounds can be beautiful! - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The Pontiac Nurseries, 1950)

Your home ... your garden [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nursery, 1930)

Your home ... your garden [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Westminster Nursery, 1931)

Your outdoor living room - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (The W.A. Natorp Company, 1949)

zhe jiang tian mu shan yao yong zhi wu zhi 浙江天目山药用植物志 - Zhejiang ren min chu ban she 浙江人民出版社 (zhe jiang ren min chu ban she chu ban浙江人民出版社出版, 1965)

zhong guo tan yang qu zhi wu zhi - Xu, Yangpeng & Wang Kezhi (ning xia ren min chu ban she, 1988)

Zhong guo tui hua sheng tai xi tong yan jiu = Studies on degraded ecosystems in China - Chen, Lingzhi, 1933 - (Zhong guo ke xue ji shu chu ban she, 1995)

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)