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121
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122by Ward, Edward, 7th viscount Bangor, 1905-Subjects: “...Petroleum industry and trade....”
Published 1959
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123
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124
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125
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126Published 1977Subjects: “...Petroleum industry and trade....”
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127by Adelman, M. A. (Morris Albert), 1917-2014Subjects: “...Petroleum industry and trade....”
Published 1972
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128
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129
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130Published 1973Subjects: “...Petroleum industry and trade....”
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131
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132
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133
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134by Mezerik, A. G. (Avrahm G.), 1901-1986Subjects: “...Petroleum industry and trade....”
Published 1959
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135
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136by Langenkamp, Robert D., 1913-2003Subjects: “...Petroleum industry and trade....”
Published 1982
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137
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138
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139
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140