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100 butterflies and moths : portraits from the tropical forests of Costa Rica
Jeffrey C. Miller, Daniel H. Janzen, Wini...
Bok Engelsk 2007
100 caterpillars : portraits from the tropical forests of Costa Rica
Jeffrey C. Miller, Daniel H. Janzen, Wini...
Bok Engelsk 2006
Costa Rican natural history
edited by Daniel H. Janzen
Bok Engelsk 1983
Herbivores : their interaction with secondary plant metabolites
edited by Gerald A. Rosenthal, Daniel H. ...
Bok Språk ikke angitt 1979
Ecology of plants in the tropics
Daniel H. Janzen
Bok Engelsk 1975
Swollen-thorn acacias of Central America
Janzen, Daniel H.
Bok Engelsk 1974