"immroth, john p. "
a guide to the library of congress classification: / john.p. immroth - 2 ed. - usa : libraries unlimited 1971. - ", 335p.; 24 cm."
hard cover
Z696.U4 / .P46 1978
a guide to the library of congress classification: / john.p. immroth - 2 ed. - usa : libraries unlimited 1971. - ", 335p.; 24 cm."
hard cover
Z696.U4 / .P46 1978