00913cam a2200265 a 4500001000800000005001700008008004100025010001300066019001100079020001500090035002000105035001200125040002000137043001200157050001700169082001900186100003300205245009300238260008700331300005600418504004100474650004700515650004700562984003800609193168920180901062813.0710930s1971 mdua b 001 0 eng  a711489511 a556810 a0801813166 9(AuCNLDY)162170 a1931689 aLCbengcLCdLC an-us---00aHE8677b.L4504a384.54/52/09731 aLevin, Harvey Joshua,d1924-14aThe invisible resource;buse and regulation of the radio spectrumc[by] Harvey J. Levin. aBaltimore,bPublished for Resources for the Future, by Johns Hopkins Pressc[1971] axx, 432 p.billus. (1 fold. col. in pocket)c24 cm. aIncludes bibliographical references. 0aRadio frequency allocationzUnited States. 0aRadioxLaw and legislationzUnited States. aANLc384.54520973 L665 <00352043>