au.\*:("DERR RL")
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EDUCATIONAL CONCEPTS IN LIBRARY SCIENCEDERR RL.1980; J. EDUC. LIBRARIANSHIP; USA; DA. 1980; VOL. 21; NO 2; PP. 135-143; BIBL. 10 REF.Article
THE INTEGRATION OF THEORY AND PRACTICE IN PROFESSIONAL PROGRAMSDERR RL.1983; JOURNAL OF EDUCATION FOR LIBRARIANSHIP; ISSN 0022-0604; USA; DA. 1983; VOL. 23; NO 3; PP. 193-206; BIBL. DISSEM.Article
PROPELLANTS AND COMBUSTION. I. ROLE OF BINDER IN SOLID PROPELLANT COMBUSTIONCOHEN NS; FLEMING RW; DERR RL et al.sdIN: AM. INST. AERONAUT. ASTRONAUT. SOC. AUTOMOT. ENG. 8TH JOINT PROPUL. SPEC. CONF.; NEW ORLEANS, LA.; 1972; NEW YORK; A.I.A.A.; DA. S.D.; NO 1121; PP. (8 P.); BIBL. 12 REF.Conference Paper