Question:
Which employer did Vilhelm Bjerknes work for in Aug, 1904?

Context:
 Vilhelm Bjerknes works for Leipzig University from Jan, 1912 to Jan, 1916. 
 Vilhelm Bjerknes works for Stockholm University from Jan, 1893 to Jan, 1907. 
 Vilhelm Bjerknes works for University of Oslo from Jan, 1907 to Jan, 1912.

Answer:
Stockholm University