Product Entrepreneur: How to Launch Your Product Idea: Napkin Sketch to $1 Million in SalesE-bookProduct Entrepreneur: How to Launch Your Product Idea: Napkin Sketch to $1 Million in SalesdeChris ClearmanNota: 5 de 5 estrelas5/5Salve Product Entrepreneur: How to Launch Your Product Idea: Napkin Sketch to $1 Million in Sales para mais tarde