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This 2008 photograph depicts Richard E. Besser, M.

This 2008 photograph depicts Richard E. Besser, M.

This historical photograph, provided by the Center

This historical photograph, provided by the Center

Medics help poisoning victims in Nicaragua

Medics help poisoning victims in Nicaragua

HD.5B.017

This November, 1943 photograph was provided by the

This November, 1943 photograph was provided by the

Magenta Microheater

Magenta Microheater

HD.6B.491

Don't Mess With Mercury

Don't Mess With Mercury

This 1950s historical photograph was provided by t

This 1950s historical photograph was provided by t

Lab-on-a-Chip

This 1977 photograph (no magnification) depicted a

This 1977 photograph (no magnification) depicted a

Osterhout Milkvetch

Osterhout Milkvetch

This November, 1943 photograph was provided by the

This November, 1943 photograph was provided by the

Medics help poisoning victims in Nicaragua

Medics help poisoning victims in Nicaragua

April 18, 2013 - EPA Acting Administrator Bob Perciasepe Visits Student Designs on National Mall

April 18, 2013 - EPA Acting Administrator Bob Perciasepe Visits Student Designs on National Mall

This historic image, provided by the Center for Di

This historic image, provided by the Center for Di

That's not for drinking

That's not for drinking

This historical photograph, provided by the Center

This historical photograph, provided by the Center

20120106-OC-AMW-0036

20120106-OC-AMW-0036

Brazilian Pepper bushes are an ornamental from Brazil that looks like Holly. They produce red berries that birds eat. The birds carry their seeds spreading the plant throughout mangrove habitat where the Pepper bush outcompetes the mangroves. The red ber

Brazilian Pepper bushes are an ornamental from Brazil that looks like Holly. They produce red berries that birds eat. The birds carry their seeds spreading the plant throughout mangrove habitat where the Pepper bush outcompetes the mangroves. The red ber

This 1991 photograph depicted U.S. Surgeon General

This 1991 photograph depicted U.S. Surgeon General

Workers clean Snowball, a dog exposed to mercury

Workers clean Snowball, a dog exposed to mercury

This historical image, which was provided by the C

This historical image, which was provided by the C

January 15, 2013 - Getting on target, Lower Duwamish River, WA

January 15, 2013 - Getting on target, Lower Duwamish River, WA

U.S. military gives medical equipment to Nicaragua

U.S. military gives medical equipment to Nicaragua

This 2008 photograph depicts Richard E. Besser, M.

This 2008 photograph depicts Richard E. Besser, M.

Magnified 100x, this 1977 photograph depicted a Pe

Magnified 100x, this 1977 photograph depicted a Pe

This November, 1943 photograph was provided by the

This November, 1943 photograph was provided by the

McClellan Park celebrates base closure milestone

McClellan Park celebrates base closure milestone

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