Marketing-Mix: die 4 P's (Produktpolitik)

I want to start an educational revolution with you! And that in audio format; with short, precise and yet entertaining contributions to everything worth knowing, which is worth passing on and being heard. My vision is simple: to challenge the ignorance in this world!
You are also welcome to share your knowledge and create your own Speakaline - on whatever topic - and send it to me. Also if you have any questions, suggestions or criticism, please feel free to contact me at speakaline@web.de