International directory of agricultural engineering institutions
Hopfen, H.J.
International directory of agricultural engineering institutions by H.J. Hopfen - Rome 1957 - 326 p.
Directory of Agricultural Engineering Institutions
631.6(058) / H 792 I
International directory of agricultural engineering institutions by H.J. Hopfen - Rome 1957 - 326 p.
Directory of Agricultural Engineering Institutions
631.6(058) / H 792 I