by Wyman, Megan T., Rivers, Pearl R., Muller, Coline, Toni, Pauline, Manser, Marta B.
Published in Current zoology (01.06.2017)

by Pearl, R. T.
Published in Scientific horticulture (01.01.1947)

by Pearl, R. T.
Published in Scientific horticulture (01.01.1947)

by Pearl, R. T.
Published in Scientific horticulture (01.01.1947)

by Kent, W. G., Dorey, O. G., Pearl, R. T.
Published in Scientific horticulture (01.01.1947)

by Pearl, R. T.
Published in The H.E.A. Year Book (01.01.1933)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1939)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1939)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1939)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1938)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1938)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1935)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1935)

by Pearl, R. T.
Published in Scientific Horticulture (01.01.1935)

by Pearl, R. T.
Published in The H.E.A. Year Book (01.01.1933)

by Pearl, R. T., Hart, R.
Published in Scientific horticulture (01.01.1935)

by Lamberton, W., Pearl, R. T.
Published in Scientific Horticulture (01.01.1935)

by Pizer, N. H., Pearl, R. T.
Published in Scientific horticulture (01.01.1954)

by Bagenal, N. B., Pearl, R. T.
Published in Scientific horticulture (01.01.1935)

by Rogers, W. S., Kent, W. G., Pearl, R. T.
Published in Scientific horticulture (01.01.1936)