TY - BOOK ED - Government of India TI - Patents for Inventions Abridgments of Specifications (25001-30000) U1 - 608/I.G. 608/I.G. PY - 1954/// CY - Delhi India PB - The Manager of Publications KW - General Science N1 - Patents for Inventions Abridgments of Specifications (25001-30000) ER -