تعداد ۲ پاسخ غیر تکراری از ۲ پاسخ تکراری در مدت زمان ۱,۷۷ ثانیه یافت شد.

1. A guide to the solar corona

پدیدآورنده : by Donald E. Billings

کتابخانه: Library of Institute of Geophysics University of Tehran (Tehran)

موضوع : Sun--corona

رده :

QC

529

.

B5

2. Managing urban water supply

پدیدآورنده : edited by Donald E. Agthe, R. Bruce Billings, and Nathan Buras

کتابخانه: Campus International Library of Kish University of Tehran (Hormozgan)

موضوع : Municipal water supply--Economic aspects.,Municipal water supply--Management.

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