Conservation and management of North American bumble bees /

Bumble bees of the eastern United States /
Published: (2013)

Bumble bees of the eastern United States /
by: Colla, Sheila
Published: (2011)

Bumble bees of the western United States /
Published: (2013)

Guide to bumble bees of the eastern United States /
by: Colla, Sheila
Published: (2011)

Bumblebees and their ways /
by: Plath, O. E. (Otto Emil), 1885-1940
Published: (1934)

Bumblebees : behaviour, ecology, and conservation /
by: Goulson, Dave
Published: (2010)

The humble-bee : its life-history and how to domesticate it with descriptions of all the British species of Bombus and Psithyrus /
by: Sladen, Frederick William Lambert
Published: (1912)

A monograph of the Western Hemisphere bumblebees (Hymenoptera: Apidae; Bombinae) /
by: Milliron, Herbert Edward
Published: (1970)

Bumblebees : their behaviour and ecology /
by: Goulson, Dave
Published: (2003)

Bumblebees /
by: Alford, D. V.
Published: (1975)

Hello, bumblebee bat /
by: Lunde, Darrin P.
Published: (2007)

Bumblebees /
by: Prŷs-Jones, Oliver E.
Published: (1987)

Bumblebees /
by: Free, John Brand
Published: (1959)

The humble-bee : its life-history and how to domesticate it, with descriptions of all the British species of Bombus and Psithyrus /
by: Sladen, Frederick William Lambert
Published: (1912)

Food plants and flower visits of bumblebees (Bombus: Hymenoptera, Apidae) in southern Finland /
by: Teräs, Ilkka
Published: (1985)

The natural history of bumblebees : a sourcebook for investigations /
by: Kearns, Carol Ann, 1955-
Published: (2001)

Studies on Swedish bumblebees (genus Bombus latr.); their domestication and biology.
by: Hasselrot, Torsten B., 1925-
Published: (1960)

Bumblebees : the natural history & identification of the species found in Britain /
by: Benton, Ted, 1942-
Published: (2006)

A monograph of the western hemisphere bumblebees (Hymenoptera: Apidae; Bombinae) : III. The genus Pyrobombus, subgenus Cullumanobombus /
by: Milliron, Herbert Edwards
Published: (1973)

Normal and pathological histology of the ovaries in Bombus latr. (Hymenopt.) /
by: Palm, Nils Bertil, 1922-
Published: (1948)

Bumblebee economics /
by: Heinrich, Bernd, 1940-
Published: (1979)

Sustaining wild bee populations for pollination services ... annual report.

Morphometric, colour, and enzyme variation in bumblebees (Hymenoptera, Apidae, Bombus) in Fennoscandia and Denmark /
by: Pekkarinen, Antti
Published: (1979)

La abeja zumbadora /
by: Susana, Eva
Published: (2001)

Biology, management, and conservation of lampreys in North America /
Published: (2009)

Strategies for conservation of avian diversity in North America.
Published: (1997)

Status review and conservation recommendations for the Gull-billed Tern (Gelochelidon nilotica) in North America /
Published: (2010)

North American conservation action plan. Plan de acción de América del Norte para la conservación.
Published: (2005)

North American conservation action plan. Plan de acción de América del Norte para la conservación.
Published: (2005)

North American conservation action plan. Plan de acción de América del Norte para la conservación.
Published: (2005)

North American forest and conservation history : a bibliography /
by: Fahl, Ronald J., 1942-
Published: (1977)

North American monarch conservation plan : Plan de América del Norte para la conservación de la mariposa monarca = Plan nord-américain de conservation du Monarque.
Published: (2008)

Wild mammals of North America : biology, management, and conservation /
Published: (2003)

Birder's conservation handbook : 100 North American birds at risk /
by: Wells, Jeffrey V. (Jeffrey Vance), 1964-
Published: (2007)

The North American bees of the genus Osmia (Hymenoptera: Apoidea) /
by: Sandhouse, Grace Adelbert
Published: (1939)

North American Wetlands Conservation Reauthorization Act : report (to accompany H.R. 3908) (including cost estimate of the Congressional Budget Office).
Published: (2002)