int(0)
array(13) {
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  string(4) "X4c="
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  string(4) "C9o="
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  string(44) "HsYxatMQewrYBs7pC8O2D4uZhKI9oGcNY8o80vQGVVEe"
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}

American men of science : a biographical directory - 10th ed. (1960-1961); v. 05

int(0)
array(13) {
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  string(4) "X4c="
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}

American men of science : a biographical directory - 10th ed. (1960-1961); v. 03

int(0)
array(13) {
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  string(4) "X4c="
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American men of science : a biographical directory - 10th ed. (1960-1961); v. 02

int(0)
array(13) {
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}

American men of science : a biographical directory - 10th ed. (1960-1961); v. 01