Essef - Two of the "Z" series of Krishna books rolled into one, the Virgin of Zesh and Tower of Zanid cover a period of time before the planet is opened up to outright human access. And one of the big problems with writing a review is that there is so much to Krishna that can be mentioned... The Tower of Zanid: A book of the Star Rovers. It is the year 2168 and men have become star-rovers. The agreed upon code is that sciences and gadgets beyond the cultural level of the peoples inhabiting the other planets will not be introduced by Earthmen, or other visitors. The adventurer Anthony Fallon decides to take risks to win a kingdom on the planet of Krishna...
Used availability for L Sprague de Camp's The Virgin of Zesh and the Tower of Zanid
December 1982 : USA Mass Market Paperback