by Tian, Hanqin, Melillo, Jerry M, Kicklighter, David W, McGuire, A. David, Helfrich, John V. K, Moore, Berrien, Vörösmarty, Charles J
Published in Nature (London) (17.12.1998)

by McGuire, A.D. (University of Alaska, Fairbanks.), Melillo, J.M, Kicklighter, D.W, Pan, Y, Xiao, X, Helfrich, J, Moore, B. III, Vorosmarty, C.J, Schloss, A.L
Published in Global biogeochemical cycles (01.06.1997)

by Barcelona, Michael J, Helfrich, John A
Published in Environmental science & technology (01.11.1986)

by Helfrich, John M
Year of Publication 07.02.2023

by Barcelona, Michael J, Helfrich, John A, Garske, Edward E
Published in Analytical chemistry (Washington) (01.02.1985)

by HELFRICH, John P
Published in BioTechniques (01.03.2002)

by Barcelona, Michael J, Helfrich, John A, Garsake, Edward E
Published in Analytical chemistry (Washington) (01.11.1985)

by Helfrich, John P.
Published in Drug Discovery Today: Biosilico (2004)

by Kicklighter, David W., Bruno, Michele, DZönges, Silke, Esser, Gerd, Heimann, Martin, Helfrich, John, Ift, Frank, Joos, Fortunat, Kaduk, Jörg, Kohlmaier, Gundolf H., McGuire, A. David, Melillo, Jerry M., Meyer, Robert, III, Berrien Moore, Nadler, Andreas, Prentice, I. Colin, Sauf, Walter, Schloss, Annette L., Sitch, Stephen, Wittenberg, Uwe, Würth, Gudrun
Published in Tellus. Series B, Chemical and physical meteorology (01.01.1999)

by KICKLIGHTER, DAVID W., BRUNO, MICHELE, DÖNGES, SILKE, ESSER, GERD, HEIMANN, MARTIN, HELFRICH, JOHN, IFT, FRANK, JOOS, FORTUNAT, KADUK, JÖRG, KOHLMAIER, GUNDOLF H., McGUIRE, A. DAVID, MELILLO, JERRY M., MEYER, ROBERT, III, BERRIEN MOORE, NADLER, ANDREAS, PRENTICE, I. COLIN, SAUF, WALTER, SCHLOSS, ANNETTE L., SITCH, STEPHEN, WITTENBERG, UWE, WÜRTH, GUDRUN
Published in Tellus. Series B, Chemical and physical meteorology (01.04.1999)

by Peterson, Bruce J., Deegan, Linda, Helfrich, John, Hobbie, John E., Hullar, Meredith, Moller, Bernie, Ford, Tim E., Hershey, Anne, Hiltner, Allison, Kipphut, George, Lock, Maurice A., Fiebig, Douglas M., McKinley, Vicky, Miller, Michael C., Vestal, J. Robie, Ventullo, Roy, Volk, Gregg
Published in Ecology (Durham) (01.04.1993)

by Marinucci, A.C, Hobbie, J.E, Helfrich, J.V.K
Published in Microbial ecology (01.01.1983)

by Helfrich, John P
Published in Scientific Computing & Instrumentation (01.11.2003)

by Kicklighter, David W, Bruno, Michele, Doenges, Silke, Esser, Gerd, Heimann, Martin, Helfrich, John, Ift, Frank, Joos, tunat, Kaduk, Joerg, Kohlmaier, Gundolf H, McGuire, ADavid, Melillo, Jerry M, Meyer, Robert, Moore, Berrien III, Nadler, Andreas, Prentice, IColin, Sauf, Walter, Schloss, Annette L, Sitch, Stephen, Wittenberg, Uwe, Wuerth, Gudrun
Published in Tellus. Series B, Chemical and physical meteorology (01.01.1999)

by Helfrich, John A
Published in The Financial times (London ed.) (08.11.2011)

by Helfrich, John
Published in Chicago tribune (1963) (15.01.1991)

by HELFRICH JOHN
Year of Publication 11.08.1942

by HELFRICH JOHN
Year of Publication 18.08.1936

by HELFRICH JOHN
Year of Publication 09.10.1934

by HELFRICH JOHN
Year of Publication 24.11.1931