Washington Park Arboretum bulletin - University of Washington. (Published by the Arboretum Foundation for the University of Washington, 1993)

Waterfowl of Illinois : status and management - Illinois. Natural History Survey Division (Illinois Natural History Survey, 1999)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1976)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1980)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1986)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1987)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1988)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1989)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1992)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1993)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1996)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1997)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1998)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 1999)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2000)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2002)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2004)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2006)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2008)

Watsonia - Botanical Society of the British Isles. (Botanical Society of the British Isles, 2010)

Weeds of the prairies - Alberta. Alberta Agriculture, Food,; Rural Development. (Alberta Agriculture, Food and Rural Development, Publishing Branch, 2000)

Weeds that affect human health - Williams, M. Coburn. (s.n, 1980)

wei guan shu zhi wu jian ding shou ce 维管束植物鉴定手册 - Lin, Ying 林英 (jiang xi xin hua yin shua chang yin shua 江西新华印刷厂印 刷, 1979)

West Indian mosses - Britton, Elizabeth G. (Elizabeth Gertrude), 1858 -1934 (1913)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1968)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1980)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1984)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1986)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1988)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1989)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1990)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1992)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1993)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1994)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1995)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1996)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1997)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1998)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 1999)

The Western Australian Naturalist - Western Australian Naturalists' Club (Western Australian Naturalists' Club, 2001)