Charles William McLaughlin, PhD & Marilyn Thompson, EdD & Dinah Zike (...)

Petrography (1)

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Климатология (1)

Deepak C. Srivastava & Vipul Rastogi & Rajit Ghosha (...)

Observatories. Instruments, devices and methods of astronomical observations (1)

М. И. Швидлер

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