
The thing to remember with this one is that its original copyright is 1970. That makes it 39 years old. The style is very different now. Nevertheless, this book was so popular its been republished several times and cover art varies. You should be able to find it in any good library or large used bookstore and on-line at Amazon.com and the like.
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The best thing about this story is its girl hero. Seems to me we get more stories like this when Science Fiction is in a popular phase. However, it also takes into consideration the belief that girls prefer Fantasy to SF. The author clearly tried to bridge the gap between the two genres.
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Elana is the daughter of two agents. Her dad leads her team and her mom died on assignment some years before. She's a teen but she's already engaged to Evrek, another agent who's just ahead of her in rank. They arrive at a Youngling world in their starship. Younglings are people from worlds less advanced than their own. They're there to explore and also to investigate an incursion by a nearby interstellar empire which wants to clear away Younglings for colonization.
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Elana is so eager to go on the mission that she tricks her way into the landing party. When the only other female on the time dies during first contact, her father has no choice but to promote her to the next rank. He and her fiance are very upset at needing to do this.
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Meanwhile, the local Younglings believe a dragon is terrorizing their people. A woodcutter's sons set out to defeat this dragon. The youngest, Georyn, is a sensitive, intelligent young man. When they encounter Elana on their journey, they believe her to be an enchantress and Georyn is taken with her in a personal way too.
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While that's going on, another young man, Jarel, is working as a guard for the Imperials and questioning why they're there clearing away the primitive peoples because, now that he sees them in person, he realize they're just like him. They're no animals.
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Of course, the three - Jarel, Georyn, and Elana - have to work together to resolve the plot.
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Remember, this was written almost forty years ago, so the language is a bit stiff and the romance is rather shallow compared to Young Adult romance now. Besides YA romance not being all that deep back then, this was Science Fiction during a time when it was believed SF readers thought romance was icky and almost entirely read by boys who thought romance was even ickier. However, the author clearly knew better and I thought the romance, though light, came off well.
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