Analysis of information sources in references of the Wikipedia article "جھیل اتھابسکا" in Urdu language version.
Canadian researchers have used the mud at the bottom of lakes like a time machine to show that tar sands oil production in Alberta, Canada, is polluting remote regional lakes as far as 50 miles from the operations.
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: نامعلوم پیرامیٹر |deadurl=
رد کیا گیا (معاونت){{حوالہ کتاب}}
: نامعلوم پیرامیٹر |deadurl=
رد کیا گیا (معاونت){{حوالہ کتاب}}
: نامعلوم پیرامیٹر |deadurl=
رد کیا گیا (معاونت)Canadian researchers have used the mud at the bottom of lakes like a time machine to show that tar sands oil production in Alberta, Canada, is polluting remote regional lakes as far as 50 miles from the operations.
{{حوالہ خبر}}
: نامعلوم پیرامیٹر |deadurl=
رد کیا گیا (معاونت)