LEADER 00000nam 2200265 a 4500 001 0463059 003 UkHlHU 007 t 008 001211 1 1975 000 eng 040 UkHlHU 050 4 RS 421 P9 110 2 American Chemical Society. 245 00 Pro-drugs as novel drug delivery systems. 260 Washington, D.C. :|bAmerican Chemical Society,|c1975. 300 245p. 440 0 A.C.S symposium series ;|v14 650 0 Medical chemistry|xMedicinal chemistry|xPharmaceutical chemistry. 650 0 Drugs|xChemistry. 650 0 Drugs|xPharmacology. 700 0 Higuchi, Takeru. 700 0 American chemical society. 700 0 Stella, V. 1946. 946 020 absent -- ISBN check required 946 650 |a & |x subfields only. In at least one case all subfields comprise single words only -- Check for Geac subject headings 946 650 has non-LCSH elements -- Check for Geac subject headings
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