—‰Θ‹³ήƒf[ƒ^ƒx[ƒX
Šς•ŒΉ“ΏŠw‰€‘εŠw‹³ˆηŠw•”μγŒ€‹†ŽΊ
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(Rock gypsum)







ŽY’nNear Ras Mallaps, Sinai Pen., Egypt q‰–—ޏφ”­Šβj