00275nam a22001097a 4500003000400000008004100004082001600045100001500061245005100076260003000127300000800157OSt220725b        |||||||| |||| 00| 0 eng d  a631.4bR40E  aRevut, I.B  aExperimental method of studying soil structure  aAmerindbSRT, Patnac1981  a530