00479cam a22001814a 4500003001000000005001700010008004100027040002500068041000800093044000800101080001000109100001700119245004700136260003900183650003600222655001900258700002000277AR-SsjUIB20250716140248.0250429s1969 xxu 000 0 eng d aAR-SsjUIBcAR-SsjUIB0 aeng axxu a539.21 aTruell, Rohn10aUltrasonic methods in solid state physics. aNew York :bAcademic Press,c1969. 7aFísica de los sólidos2lemb 7aLibro2unescot1 aElbaum, Charles