共 50 条
- [42] 50 YEARS OF PROGRESS IN PLASTICS INDUSTRIAL AND ENGINEERING CHEMISTRY, 1958, 50 (10): : A58 - A61
- [43] 50 YEARS OF FERTILIZER PROGRESS INDUSTRIAL AND ENGINEERING CHEMISTRY, 1958, 50 (05): : A40 - A43
- [48] 50 YEARS OF DETERGENT PROGRESS INDUSTRIAL AND ENGINEERING CHEMISTRY, 1958, 50 (08): : A48 - A51
- [50] LEPROSY - 50 YEARS OF PROGRESS BOLETIN DE LA OFICINA SANITARIA PANAMERICANA, 1973, 74 (05): : 375 - 391