2
(CARLI) (Other Sources: (UIUdb)708379)
Book
3
...Spengel, Johann Wilhelm, 1852-1921. Beitrag zur kenntniss der kiemen des Amphioxus....
(CARLI) (Other Sources: (HAT)1564748)
Book Electronic
4
...Spengel, Johann Wilhelm, 1852-1921. Beiträge zur kenntniss der Gephyreen, 1. Die Bildung ... Der...
(CARLI) (Other Sources: (HAT)1622694)
Book Electronic
5
...Spengel, Johann Wilhelm, 1852-1921. Charles Darwin....
(CARLI) (Other Sources: (HAT)1863343)
Book Electronic
6
...Spengel, Johann Wilhelm, 1852-1921. Studien über die enteropneusten der Siboga-expedition nebst...
(CARLI) (Other Sources: (HAT)1641714)
Book Electronic
7
...Spengel, Johann Wilhelm, 1852-1921. Zweckmässigkeit und anpassung....
(CARLI) (Other Sources: (HAT)2165616)
Book Electronic
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