Nitrogen Nutrition in Higher Plants / edited by H. S. Srivstava and R. P. Singh ; Foreword by Peter J. Lea. Srivstava, H. S. ed. Singh, R. P. ed. Plants -- Effect of nitrogen on. Nitrogen fertilizers. 581.13 NIT Includes Bibliographical references. New Delhi : Associated Publishing ; 1995 1995 1995 Text xvi, 445 p. : eng