|  | PERSISTENCE OF DDT AND PARATHION RESIDUES ON A PLANT SURFACE AS INFLUENCED BY WEATHER FACTORS  mededelingen nr. 67 | FAHMY, H.S.M. | € 5.00 |  |  | 
                
                
                    |  | PERSISTENT ORGANIC POLLUTANTS a swedish view of an international problem  ( Monitor 16) | BERNES,CLAES | € 25.00 |  |  | 
                
                
                    |  | Personal computing: hardware and software basics. | Capece,Raymond P. (editor) | € 35.00 |  |  | 
                
                
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                    |  | PERSPECTIEF handleiding volgens de methode der zelfwerkzaamheid  2e druk | BOONSTRA,H.C. | € 10.00 |  |  | 
                
                
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                    |  | Perspective. | Frenberger, Hans | € 6.00 |  |  | 
                
                
                    |  | Perspectives and recommendations | St-Pierre, L.E. (editor) | € 8.00 |  |  | 
                
                
                    |  | PERSPECTIVES IN COASTAL DUNE MANAGEMENT  proceedings of the European Symposium Leiden september 7-11, 1987 The Netherlands | MEULEN,F. / JUNGERIUS,P.D. / VISSER,J.H. | € 20.00 |  |  | 
                
                
                    |  | Perspectives on Technology | ROSENBERG,NATHAN | € 10.00 |  |  | 
                
                
                    |  | Perspektive. | Freyberger, Hans | € 5.00 |  |  | 
                
                
                    |  | Pesticidal Formulations Research. Symposion, Miami Beach April 13-14, 1967 | N.N. | € 8.00 |  |  | 
                
                
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                    |  | Petrus Ramus en de wiskunde. | Verdonk, J.J. | € 12.00 |  |  |