| Author |
Number of entries |
| Huinink, H. P. and Pel, L. and Kopinga, K. | 1 |
| Häberle, Daniel | 1 |
| Häfner, Klaus | 1 |
| I.D. MacLeod, R. Wozniak | 1 |
| IGS and TÜV | 1 |
| Institut für Steinkonservierung e.V. IFS | 3 |
| J. Ellis, R. Giovanoli, W. Stumm | 1 |
| Jaenecke, E. | 1 |
| Jander, Gerhardt and Blasius, Ewald | 1 |
| Janotte, Olaf | 1 |
| Jaynes S. M., Cooke R. U. | 1 |
| Jeannette, D. | 1 |
| Johnson, Jessica S. | 1 |
| Juling, Herbert and Franzen, Christoph | 1 |
| Juling, Herbert and Gülker, Gerd and El Jarad, Akram and Brüggerhoff , Stefan and Kirchner, Dirk and Linnow, Kirsten and Steiger, Michael | 1 |
| Juling, Herbert and Kirchner, Dirk and Brüggerhoff, Stefan and Linnow, Kirsten and Steiger, Michael and El Jared, Akram and Gülker, Gerd | 1 |
| Jörg, F. | 1 |
| Kaesche, Helmut | 1 |
| Kalisch, Uwe | 1 |
| Kamh, G. M. E. and Azzam, R. | 1 |
| Kamran, Kashif | 1 |
| Kamran, Kashif and Pel, Leo and Sawdy, Alison and Huinink, Henk and Kopinga, Klaas | 1 |
| Karl Herold | 1 |
| Katharina Schmidt-Ott, Niklaus Oswald | 1 |
| Katzschmann, Lutz and Aselmeyer, Gunter and Auras, Michael | 1 |
| Kaufhold, Sandra | 1 |
| Keilwerth, S. | 1 |
| Kellner, Barbara | 1 |
| Kerr, Paul F. | 1 |
| Kersten, M. and Dicke, M. and Kriews, M. and Schmidt, D. and Schulz, M. and Schwikowski, M. and Steiger, M. | 1 |
| Khaimov-Mal'kov, V.I. | 1 |
| Kieslinger, A. | 1 |
| Kirchner, Dirk and Worch, Anatol | 1 |
| Kiriyama, Kyoko; Wakiya, Soichiro; Takatori, Nobumitsu; Ogura, Daisuke; Abuku, Masaru; Kohdzuma, Yohsei | 1 |
| Kleber, Will | 1 |
| Klemm, W. and Siedel, H. | 1 |
| Klemm, Werner and Siedel, Heiner | 3 |
| Klemm, Werner and Tichomirova, M. and Siedel, Heiner | 1 |
| Klemmedson, J. and Rehfuess, K. and Makeschin, F. and Rodenkirchen, H. | 1 |
| Klepetsanis, Pavlos G. and Koutsoukos, Petros G. | 1 |
| Knacke, O. and Erdberg, R.v. | 1 |
| Knoblauch, Harald and Schneider, Ulrich | 1 |
| Koblischek, Peter J. | 1 |
| Kohaupt, Burchard | 1 |
| Koller, J. | 1 |
| Kollmann, Helmut | 3 |
| Kollmann, Helmut and Strübel, Günter | 1 |
| Kolo, K. and Claeys, Ph. | 1 |
| Koniorczyk, Marcin and Gawin, Dariusz | 1 |
| Kontozova-Deutsch, Velichka and Cardell, Carolina and Urosevic, Maja and Ruiz-Agudo,Encarnación and Deutsch, Felix and Van Grieken, René | 1 |