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AR-LpUBP |
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090924s1946 xxu g 000 0 eng d |
| 040 |
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|a AR-LpUBP
|b spa
|c AR-LpUBP
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| 245 |
1 |
0 |
|a Output and productivity in the electric and gas utilities 1899-1942 /
|c Jacob Martin Gould.
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| 260 |
|
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|a New York :
|b National bureau of economic research, Nueva York,
|c 1946.
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| 942 |
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|c BK
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| 952 |
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|y BK
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| 999 |
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|c 127761
|d 127761
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| 988 |
|
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|c 34
|d Miguel Kiperszmid
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| 997 |
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|z a
|