==Development==The Bü 133 was a development of the Bücker Bü 131 Jungmann two-seat basic trainer.
== Desarrollo ==El Bü 133 es un desarrollo del entrenador biplaza primario Bücker Bü 131 Jungmann .
Translate the following text into Spanish:
"==Development==The Bü 133 was a development of the Bücker Bü 131 Jungmann two-seat basic trainer."
== Desarrollo ==El Bü 133 es un desarrollo del entrenador biplaza primario Bücker Bü 131 Jungmann .