Björn LO, Sundqvist C, Öquist G
A tribute to Per Halldal (1922-1986), a Norwegian photobiologist in Sweden
Photosynthesis Research: 2007 92:7-11

Abstract
We present here a tribute to Per Halldal (February 2, 1922–March 26, 1986), a leader, an instrumentalist, an expert on phototaxis in algae, and one whom we remember, even after 20 years of his death, as a person who spread joy, enthusiasm and knowledge wherever he went.

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