A. A. Varshavskii

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The distribution of fibers of different sizes in the gastrointestinal tract in two species of pikas—Pallas’ pika Ochotona pallasi and daurian pika O. dauurica—was studied. It was established that fibers of small-sized fractions dominated in all organs of the digestive tract of both pika species, the proportion of which in the stomach proved to be even(More)
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