Free Ebook: Sargasso of Space by Andre Norton

Sargasso of Space by Andre Norton is currently free to download from Amazon (US, ES). This is the synopsis of the book:

Almost half a century ago, renowned science fiction and fantasy author Andre Norton introduced apprentice cargo master Dane Thorson in Sargasso of Space and Plague Ship.

Dane signed on with the independent cargo ship Solar Queen looking for a career in off-world trade.

In Sargasso of Space, the Solar Queen free traders win exclusive rights to trade with the planet Limbo, but the crew arrives to find most of the planet's surface charred, with little signs of life. They find a valley with life, but others may still lurk. Worse yet, a strange force threatens to cripple the Queen. They must solve the planet's mysteries if they hope to escape not only with tradeable goods, but their lives.