00375aam a2200145   4500003000400000005001700004008004100021040000600062082001600068100001800084245003400102260006100136300001000197650002200207OSt20260604114816.0140223b1986    xxu||||| |||| 00| 0 eng d  c   a665.776 CHA  aChawla, O. P.  aAdvances in biogas technology  aNew DelhibIndian Council of Agricultural Researchc1986  a144p.  aBiogas technology