John Steffensen

Steffensen (second from the left) after winning the bronze medal at the [[2009 World Championships in Athletics|2009 World Championships]] 4 x 400 m John William Steffensen (born 30 August 1982) is an Australian former track and field athlete, who specialised in 200 and 400 metres. He won silver at the 2004 Olympics in Athens. His personal bests were 20.79 and 44.73. Provided by Wikipedia
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    A spectral three-dimensional color space model of tree crown health.

    A spectral three-dimensional color space model of tree crown health. by William B Monahan, Colton E Arnspiger, Parth Bhatt, Zhongming An, Frank J Krist, Tao Liu, Robert P Richard, Curtis Edson, Robert E Froese, John Steffenson, Tony C Lammers, Randy Frosh

    Published 2022-01-01
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  2. 2
    A spectral three-dimensional color space model of tree crown health

    A spectral three-dimensional color space model of tree crown health by William B. Monahan, Colton E. Arnspiger, Parth Bhatt, Zhongming An, Frank J. Krist, Tao Liu, Robert P. Richard, Curtis Edson, Robert E. Froese, John Steffenson, Tony C. Lammers, Randy Frosh

    Published 2022-01-01
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    Article

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