| Recipe Books |
OEK 999 |
| Reclamation, Agricultural Land |
LAN 104 |
| Reclamation, Heath |
BAU 630 |
| Reclamation, Mining |
BER 540 |
| Reclamation, Moors |
BAU 630 |
| Reclamation, Wastelands |
BAU 630 |
| Reconnaissance, Army Technology |
WEH 610 |
| Reconstructive Surgery |
MED 535 |
| Recording Technology |
ELT 770 |
| Recovera, Crude Oil |
BER 650 |
| Recovery, Metals |
HUE 200 |
| Recovery, Natural Gas |
BER 650 |
| Recreation, Environmental Damage |
UMW 017 |
| Recreation, Local, Regional Planning |
RPL 817 |
| Recreational Noise |
UMW 262 |
| Recreational Sports |
SPO 030 |
| Recreational Traffic, Geography |
GEO 096 |
| Recrystallization, Recovery, Diffusion and Similar Microscopic Movements (Grain Boundary Movement etc.) |
WER 032 |
| Rectifiers |
ELT 874 |
| Rectifying |
CIT 215 |
| Recultivation |
UMW 133 |
| Recultivation, Agriculture |
LAN 104 |
| Recultivation, Mining |
BER 540 |
| Recursion |
DAT 542 |
| Recursion Theory |
MAT 034 |
| Recycling |
UMW 537 |
| Recycling, Food Industries |
LEB 974 |
| Red Cross |
MED 842 |
| Reduction |
CHE 621 |
| Reduction of Working Hours |
WIR 386 |
| Reductions, Matrix Theory |
MAT 153 |
| REFA |
FER 092 |
| Refectories, Community Catering |
OEK 553 |
| Reference and Information Service, Library |
INF 550 |
| Reference Surfaces, Geodesy |
BAU 945 |
| Reference Works, General |
ALL 100 |
| Refining, Crude Oil |
CIT 530 |
| Refining, Metals |
HUE 200 |
| Reflectors, Nuclear Technology |
NUC 540 |
| Reforestation |
FOR 230 |
| Reform of Communes |
RPL 722 |
| Reform of Counties |
RPL 722 |
| Reform of Federal States |
RPL 721 |
| Reform of Municipalities |
RPL 722 |
| Reformation and Counter-Reformation |
REL 805 |
| Refractometry |
CHE 238 |
| Refractory Materials, Geology |
GEO 457 |
| Refrigerant Agents |
MAS 815 |
| Refrigerants, Brewing |
BRA 760 |
| Refrigerating Machines |
MAS 825 |