HEA|  |01281nam0 2200301   45  
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005|  |1920010720163852
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100|  |□a20010720d1976    em y0chiy0121    ea
101|0 |□achi
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105|  |□ay   z   000yy
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200|10|□a锅炉的土法改造□Aguo lu de tu fa gai zao
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215|  |□a156页□d19cm
300|  |□a节约煤炭经验选辑
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